42497866 has 8 divisors (see below), whose sum is σ = 63921600. Its totient is φ = 21190668.

The previous prime is 42497863. The next prime is 42497881. The reversal of 42497866 is 66879424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42497866² = 3612137229107912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42497863) 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, 28216 + ... + 29683.

It is an arithmetic number, because the mean of its divisors is an integer number (7990200).

Almost surely, 2^42497866 is an apocalyptic number.

42497866 is a deficient number, since it is larger than the sum of its proper divisors (21423734).

42497866 is a wasteful number, since it uses less digits than its factorization.

42497866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58268.

The product of its digits is 580608, while the sum is 46.

The square root of 42497866 is about 6519.0387328194. The cubic root of 42497866 is about 348.9707613373.

The spelling of 42497866 in words is "forty-two million, four hundred ninety-seven thousand, eight hundred sixty-six".