42000626 has 4 divisors (see below), whose sum is σ = 63000942. Its totient is φ = 21000312.

The previous prime is 42000611. The next prime is 42000649. The reversal of 42000626 is 62600024.

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

It can be written as a sum of positive squares in only one way, i.e., 40896025 + 1104601 = 6395^2 + 1051^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42000598 and 42000607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500155 + ... + 10500158.

Almost surely, 2^42000626 is an apocalyptic number.

42000626 is a deficient number, since it is larger than the sum of its proper divisors (21000316).

42000626 is a wasteful number, since it uses less digits than its factorization.

42000626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21000315.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 42000626 is about 6480.7889951764. The cubic root of 42000626 is about 347.6043914584.

The spelling of 42000626 in words is "forty-two million, six hundred twenty-six", and thus it is an aban number.