42102958 has 4 divisors (see below), whose sum is σ = 63154440. Its totient is φ = 21051478.

The previous prime is 42102943. The next prime is 42102959. The reversal of 42102958 is 85920124.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42102959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10525738 + ... + 10525741.

It is an arithmetic number, because the mean of its divisors is an integer number (15788610).

Almost surely, 2^42102958 is an apocalyptic number.

42102958 is a deficient number, since it is larger than the sum of its proper divisors (21051482).

42102958 is a wasteful number, since it uses less digits than its factorization.

42102958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21051481.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 42102958 is about 6488.6792184542. The cubic root of 42102958 is about 347.8864682280.

The spelling of 42102958 in words is "forty-two million, one hundred two thousand, nine hundred fifty-eight".