42612621 has 4 divisors (see below), whose sum is σ = 56816832. Its totient is φ = 28408412.

The previous prime is 42612599. The next prime is 42612677. The reversal of 42612621 is 12621624.

42612621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42612621 - 2⁹ = 42612109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42612591 and 42612600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42617621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7102101 + ... + 7102106.

It is an arithmetic number, because the mean of its divisors is an integer number (14204208).

Almost surely, 2^42612621 is an apocalyptic number.

It is an amenable number.

42612621 is a deficient number, since it is larger than the sum of its proper divisors (14204211).

42612621 is a wasteful number, since it uses less digits than its factorization.

42612621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14204210.

The product of its digits is 1152, while the sum is 24.

The square root of 42612621 is about 6527.8343269418. The cubic root of 42612621 is about 349.2845821834.

The spelling of 42612621 in words is "forty-two million, six hundred twelve thousand, six hundred twenty-one".