120423491 has 2 divisors, whose sum is σ = 120423492. Its totient is φ = 120423490.

The previous prime is 120423481. The next prime is 120423547. The reversal of 120423491 is 194324021.

It is a weak prime.

It is an emirp because it is prime and its reverse (194324021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120423491 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120423491.

It is not a weakly prime, because it can be changed into another prime (120423431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60211745 + 60211746.

It is an arithmetic number, because the mean of its divisors is an integer number (60211746).

Almost surely, 2^120423491 is an apocalyptic number.

120423491 is a deficient number, since it is larger than the sum of its proper divisors (1).

120423491 is an equidigital number, since it uses as much as digits as its factorization.

120423491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 120423491 is about 10973.7637572530. The cubic root of 120423491 is about 493.8219662019.

The spelling of 120423491 in words is "one hundred twenty million, four hundred twenty-three thousand, four hundred ninety-one".