42999958 has 4 divisors (see below), whose sum is σ = 64499940. Its totient is φ = 21499978.

The previous prime is 42999947. The next prime is 42999973. The reversal of 42999958 is 85999924.

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

It is a junction number, because it is equal to n+sod(n) for n = 42999899 and 42999908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10749988 + ... + 10749991.

It is an arithmetic number, because the mean of its divisors is an integer number (16124985).

Almost surely, 2^42999958 is an apocalyptic number.

42999958 is a deficient number, since it is larger than the sum of its proper divisors (21499982).

42999958 is a wasteful number, since it uses less digits than its factorization.

42999958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21499981.

The product of its digits is 2099520, while the sum is 55.

The square root of 42999958 is about 6557.4353218312. The cubic root of 42999958 is about 350.3396919745.

It can be divided in two parts, 42 and 999958, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 42999958 in words is "forty-two million, nine hundred ninety-nine thousand, nine hundred fifty-eight".