156677042 has 8 divisors (see below), whose sum is σ = 235152300. Its totient is φ = 78292944.

The previous prime is 156677041. The next prime is 156677077. The reversal of 156677042 is 240776651.

It can be written as a sum of positive squares in 2 ways, for example, as 125193721 + 31483321 = 11189^2 + 5611^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 156676987 and 156677005.

It is not an unprimeable number, because it can be changed into a prime (156677041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18317 + ... + 25472.

Almost surely, 2^156677042 is an apocalyptic number.

156677042 is a deficient number, since it is larger than the sum of its proper divisors (78475258).

156677042 is a wasteful number, since it uses less digits than its factorization.

156677042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45580.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 156677042 is about 12517.0700245704. The cubic root of 156677042 is about 539.0989110131.

The spelling of 156677042 in words is "one hundred fifty-six million, six hundred seventy-seven thousand, forty-two".