142657440 has 96 divisors (see below), whose sum is σ = 451059840. Its totient is φ = 37899264.

The previous prime is 142657439. The next prime is 142657441. The reversal of 142657440 is 44756241.

It is an interprime number because it is at equal distance from previous prime (142657439) and next prime (142657441).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×142657440² = 40702290374707200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142657441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210382 + ... + 211058.

It is an arithmetic number, because the mean of its divisors is an integer number (4698540).

Almost surely, 2^142657440 is an apocalyptic number.

142657440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142657440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225529920).

142657440 is an abundant number, since it is smaller than the sum of its proper divisors (308402400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142657440 is a wasteful number, since it uses less digits than its factorization.

142657440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 142657440 is about 11943.9290017984. The cubic root of 142657440 is about 522.5142537110.

The spelling of 142657440 in words is "one hundred forty-two million, six hundred fifty-seven thousand, four hundred forty".