42403951 has 2 divisors, whose sum is σ = 42403952. Its totient is φ = 42403950.

The previous prime is 42403937. The next prime is 42403957. The reversal of 42403951 is 15930424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42403951 - 2⁵ = 42403919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42403957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201975 + 21201976.

It is an arithmetic number, because the mean of its divisors is an integer number (21201976).

Almost surely, 2^42403951 is an apocalyptic number.

42403951 is a deficient number, since it is larger than the sum of its proper divisors (1).

42403951 is an equidigital number, since it uses as much as digits as its factorization.

42403951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 42403951 is about 6511.8316163734. The cubic root of 42403951 is about 348.7135110824.

The spelling of 42403951 in words is "forty-two million, four hundred three thousand, nine hundred fifty-one".