42155958 has 16 divisors (see below), whose sum is σ = 90797616. Its totient is φ = 12971040.

The previous prime is 42155957. The next prime is 42155983. The reversal of 42155958 is 85955124.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42155951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270153 + ... + 270308.

It is an arithmetic number, because the mean of its divisors is an integer number (5674851).

Almost surely, 2^42155958 is an apocalyptic number.

42155958 is an abundant number, since it is smaller than the sum of its proper divisors (48641658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42155958 is a wasteful number, since it uses less digits than its factorization.

42155958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540479.

The product of its digits is 72000, while the sum is 39.

The square root of 42155958 is about 6492.7619700710. The cubic root of 42155958 is about 348.0323823744.

The spelling of 42155958 in words is "forty-two million, one hundred fifty-five thousand, nine hundred fifty-eight".