42987357 has 36 divisors (see below), whose sum is σ = 72985536. Its totient is φ = 24307920.

The previous prime is 42987349. The next prime is 42987361. The reversal of 42987357 is 75378924.

42987357 is a `hidden beast` number, since 4 + 298 + 7 + 357 = 666.

It is not a de Polignac number, because 42987357 - 2³ = 42987349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42987397) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 46732 + ... + 47642.

It is an arithmetic number, because the mean of its divisors is an integer number (2027376).

Almost surely, 2^42987357 is an apocalyptic number.

It is an amenable number.

42987357 is a deficient number, since it is larger than the sum of its proper divisors (29998179).

42987357 is a wasteful number, since it uses less digits than its factorization.

42987357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1028 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 42987357 is about 6556.4744337182. The cubic root of 42987357 is about 350.3054666561.

It can be divided in two parts, 429 and 87357, that multiplied together give a triangular number (37476153 = T₈₆₅₇).

The spelling of 42987357 in words is "forty-two million, nine hundred eighty-seven thousand, three hundred fifty-seven".