42697930 has 16 divisors (see below), whose sum is σ = 83843424. Its totient is φ = 15526480.

The previous prime is 42697927. The next prime is 42697937. The reversal of 42697930 is 3979624.

It is a super-2 number, since 2×42697930² = 3646226452569800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42697937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193972 + ... + 194191.

It is an arithmetic number, because the mean of its divisors is an integer number (5240214).

Almost surely, 2^42697930 is an apocalyptic number.

42697930 is a deficient number, since it is larger than the sum of its proper divisors (41145494).

42697930 is a wasteful number, since it uses less digits than its factorization.

42697930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388181.

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

The square root of 42697930 is about 6534.3653096533. The cubic root of 42697930 is about 349.5175120489.

The spelling of 42697930 in words is "forty-two million, six hundred ninety-seven thousand, nine hundred thirty".