42942401 has 2 divisors, whose sum is σ = 42942402. Its totient is φ = 42942400.

The previous prime is 42942379. The next prime is 42942407. The reversal of 42942401 is 10424924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37834801 + 5107600 = 6151^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 42942401 - 2¹⁴ = 42926017 is a prime.

It is not a weakly prime, because it can be changed into another prime (42942407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21471200 + 21471201.

It is an arithmetic number, because the mean of its divisors is an integer number (21471201).

Almost surely, 2^42942401 is an apocalyptic number.

It is an amenable number.

42942401 is a deficient number, since it is larger than the sum of its proper divisors (1).

42942401 is an equidigital number, since it uses as much as digits as its factorization.

42942401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 42942401 is about 6553.0451699954. The cubic root of 42942401 is about 350.1833080596.

The spelling of 42942401 in words is "forty-two million, nine hundred forty-two thousand, four hundred one".