42169977 has 12 divisors (see below), whose sum is σ = 63168560. Its totient is φ = 28113156.

The previous prime is 42169943. The next prime is 42169997. The reversal of 42169977 is 77996124.

It is not a de Polignac number, because 42169977 - 2¹² = 42165881 is a prime.

It is a super-3 number, since 3×42169977³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42169937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86527 + ... + 87012.

Almost surely, 2^42169977 is an apocalyptic number.

It is an amenable number.

42169977 is a deficient number, since it is larger than the sum of its proper divisors (20998583).

42169977 is an equidigital number, since it uses as much as digits as its factorization.

42169977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173554 (or 173542 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 42169977 is about 6493.8414671133. The cubic root of 42169977 is about 348.0709575878.

The spelling of 42169977 in words is "forty-two million, one hundred sixty-nine thousand, nine hundred seventy-seven".