42179937 has 4 divisors (see below), whose sum is σ = 56239920. Its totient is φ = 28119956.

The previous prime is 42179927. The next prime is 42180013. The reversal of 42179937 is 73997124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42179937 - 2¹⁸ = 41917793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42179927) 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, 7029987 + ... + 7029992.

It is an arithmetic number, because the mean of its divisors is an integer number (14059980).

Almost surely, 2^42179937 is an apocalyptic number.

It is an amenable number.

42179937 is a deficient number, since it is larger than the sum of its proper divisors (14059983).

42179937 is a wasteful number, since it uses less digits than its factorization.

42179937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14059982.

The product of its digits is 95256, while the sum is 42.

The square root of 42179937 is about 6494.6083022766. The cubic root of 42179937 is about 348.0983587080.

The spelling of 42179937 in words is "forty-two million, one hundred seventy-nine thousand, nine hundred thirty-seven".