42697051 has 4 divisors (see below), whose sum is σ = 43237600. Its totient is φ = 42156504.

The previous prime is 42697037. The next prime is 42697063. The reversal of 42697051 is 15079624.

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

It is a cyclic number.

It is not a de Polignac number, because 42697051 - 2¹³ = 42688859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42696998 and 42697016.

It is not an unprimeable number, because it can be changed into a prime (42697021) 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, 270156 + ... + 270313.

It is an arithmetic number, because the mean of its divisors is an integer number (10809400).

Almost surely, 2^42697051 is an apocalyptic number.

42697051 is a deficient number, since it is larger than the sum of its proper divisors (540549).

42697051 is an equidigital number, since it uses as much as digits as its factorization.

42697051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540548.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 42697051 is about 6534.2980495230. The cubic root of 42697051 is about 349.5151135876.

The spelling of 42697051 in words is "forty-two million, six hundred ninety-seven thousand, fifty-one".