42015455623 has 2 divisors, whose sum is σ = 42015455624. Its totient is φ = 42015455622.

The previous prime is 42015455543. The next prime is 42015455627. The reversal of 42015455623 is 32655451024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42015455623 - 2²⁹ = 41478584711 is a prime.

It is a super-2 number, since 2×42015455623² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42015455627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21007727811 + 21007727812.

It is an arithmetic number, because the mean of its divisors is an integer number (21007727812).

Almost surely, 2^42015455623 is an apocalyptic number.

42015455623 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015455623 is an equidigital number, since it uses as much as digits as its factorization.

42015455623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 42015455623 in words is "forty-two billion, fifteen million, four hundred fifty-five thousand, six hundred twenty-three".