42685977 has 16 divisors (see below), whose sum is σ = 58998272. Its totient is φ = 27423360.

The previous prime is 42685949. The next prime is 42686009. The reversal of 42685977 is 77958624.

It is not a de Polignac number, because 42685977 - 2¹⁴ = 42669593 is a prime.

It is a super-3 number, since 3×42685977³ (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 (42685277) 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, 24933 + ... + 26589.

It is an arithmetic number, because the mean of its divisors is an integer number (3687392).

Almost surely, 2^42685977 is an apocalyptic number.

It is an amenable number.

42685977 is a deficient number, since it is larger than the sum of its proper divisors (16312295).

42685977 is a wasteful number, since it uses less digits than its factorization.

42685977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968.

The product of its digits is 846720, while the sum is 48.

The square root of 42685977 is about 6533.4506196955. The cubic root of 42685977 is about 349.4848939748.

The spelling of 42685977 in words is "forty-two million, six hundred eighty-five thousand, nine hundred seventy-seven".