42176642 has 4 divisors (see below), whose sum is σ = 63264966. Its totient is φ = 21088320.

The previous prime is 42176639. The next prime is 42176653. The reversal of 42176642 is 24667124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40436881 + 1739761 = 6359^2 + 1319^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42176599 and 42176608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10544159 + ... + 10544162.

Almost surely, 2^42176642 is an apocalyptic number.

42176642 is a deficient number, since it is larger than the sum of its proper divisors (21088324).

42176642 is a wasteful number, since it uses less digits than its factorization.

42176642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21088323.

The product of its digits is 16128, while the sum is 32.

The square root of 42176642 is about 6494.3546253650. The cubic root of 42176642 is about 348.0892942567.

The spelling of 42176642 in words is "forty-two million, one hundred seventy-six thousand, six hundred forty-two".