42621526 has 8 divisors (see below), whose sum is σ = 64035504. Its totient is φ = 21276360.

The previous prime is 42621457. The next prime is 42621529. The reversal of 42621526 is 62512624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42621494 and 42621503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42621529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15625 + ... + 18148.

It is an arithmetic number, because the mean of its divisors is an integer number (8004438).

Almost surely, 2^42621526 is an apocalyptic number.

42621526 is a deficient number, since it is larger than the sum of its proper divisors (21413978).

42621526 is a wasteful number, since it uses less digits than its factorization.

42621526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34406.

The product of its digits is 5760, while the sum is 28.

The square root of 42621526 is about 6528.5163705087. The cubic root of 42621526 is about 349.3089111458.

It can be divided in two parts, 426 and 21526, that added together give a cube (21952 = 28³).

The spelling of 42621526 in words is "forty-two million, six hundred twenty-one thousand, five hundred twenty-six".