42697039 has 16 divisors (see below), whose sum is σ = 55549440. Its totient is φ = 31822560.

The previous prime is 42697037. The next prime is 42697063. The reversal of 42697039 is 93079624.

It is not a de Polignac number, because 42697039 - 2¹ = 42697037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42696992 and 42697010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42697033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10284 + ... + 13825.

It is an arithmetic number, because the mean of its divisors is an integer number (3471840).

Almost surely, 2^42697039 is an apocalyptic number.

42697039 is a deficient number, since it is larger than the sum of its proper divisors (12852401).

42697039 is a wasteful number, since it uses less digits than its factorization.

42697039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24150.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 42697039 is about 6534.2971312912. The cubic root of 42697039 is about 349.5150808438.

The spelling of 42697039 in words is "forty-two million, six hundred ninety-seven thousand, thirty-nine".