142770540 has 48 divisors (see below), whose sum is σ = 436101120. Its totient is φ = 34610880.

The previous prime is 142770533. The next prime is 142770547. The reversal of 142770540 is 45077241.

It is an interprime number because it is at equal distance from previous prime (142770533) and next prime (142770547).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 142770498 and 142770507.

It is not an unprimeable number, because it can be changed into a prime (142770547) 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, 107500 + ... + 108819.

It is an arithmetic number, because the mean of its divisors is an integer number (9085440).

Almost surely, 2^142770540 is an apocalyptic number.

142770540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142770540 is an abundant number, since it is smaller than the sum of its proper divisors (293330580).

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

142770540 is a wasteful number, since it uses less digits than its factorization.

142770540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216342 (or 216340 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 142770540 is about 11948.6626866775. The cubic root of 142770540 is about 522.6523017782.

The spelling of 142770540 in words is "one hundred forty-two million, seven hundred seventy thousand, five hundred forty".