42487957 has 4 divisors (see below), whose sum is σ = 42604096. Its totient is φ = 42371820.

The previous prime is 42487943. The next prime is 42488003. The reversal of 42487957 is 75978424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42487957 - 2⁷ = 42487829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42457957) 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, 57519 + ... + 58252.

It is an arithmetic number, because the mean of its divisors is an integer number (10651024).

Almost surely, 2^42487957 is an apocalyptic number.

It is an amenable number.

42487957 is a deficient number, since it is larger than the sum of its proper divisors (116139).

42487957 is a wasteful number, since it uses less digits than its factorization.

42487957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116138.

The product of its digits is 564480, while the sum is 46.

The square root of 42487957 is about 6518.2786838244. The cubic root of 42487957 is about 348.9436366807.

The spelling of 42487957 in words is "forty-two million, four hundred eighty-seven thousand, nine hundred fifty-seven".