42697740 has 24 divisors (see below), whose sum is σ = 119553840. Its totient is φ = 11386048.

The previous prime is 42697709. The next prime is 42697763. The reversal of 42697740 is 4779624.

It is a super-2 number, since 2×42697740² = 3646194002215200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355755 + ... + 355874.

It is an arithmetic number, because the mean of its divisors is an integer number (4981410).

Almost surely, 2^42697740 is an apocalyptic number.

It is an amenable number.

42697740 is an abundant number, since it is smaller than the sum of its proper divisors (76856100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42697740 is a wasteful number, since it uses less digits than its factorization.

42697740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711641 (or 711639 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 42697740 is about 6534.3507711172. The cubic root of 42697740 is about 349.5169936129.

The spelling of 42697740 in words is "forty-two million, six hundred ninety-seven thousand, seven hundred forty".