1340556142 has 8 divisors (see below), whose sum is σ = 2015634600. Its totient is φ = 668677944.

The previous prime is 1340556121. The next prime is 1340556149. The reversal of 1340556142 is 2416550431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340556149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799017 + ... + 800692.

It is an arithmetic number, because the mean of its divisors is an integer number (251954325).

Almost surely, 2^1340556142 is an apocalyptic number.

1340556142 is a deficient number, since it is larger than the sum of its proper divisors (675078458).

1340556142 is a wasteful number, since it uses less digits than its factorization.

1340556142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600130.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1340556142 is about 36613.6059682736. The cubic root of 1340556142 is about 1102.6262707444.

The spelling of 1340556142 in words is "one billion, three hundred forty million, five hundred fifty-six thousand, one hundred forty-two".