42251983 has 2 divisors, whose sum is σ = 42251984. Its totient is φ = 42251982.

The previous prime is 42251959. The next prime is 42251999. The reversal of 42251983 is 38915224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42251983 - 2⁹ = 42251471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42251903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21125991 + 21125992.

It is an arithmetic number, because the mean of its divisors is an integer number (21125992).

Almost surely, 2^42251983 is an apocalyptic number.

42251983 is a deficient number, since it is larger than the sum of its proper divisors (1).

42251983 is an equidigital number, since it uses as much as digits as its factorization.

42251983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 42251983 is about 6500.1525366717. The cubic root of 42251983 is about 348.2964373111.

It can be divided in two parts, 42251 and 983, that added together give a palindrome (43234).

The spelling of 42251983 in words is "forty-two million, two hundred fifty-one thousand, nine hundred eighty-three".