42401039 has 4 divisors (see below), whose sum is σ = 43096200. Its totient is φ = 41705880.

The previous prime is 42401033. The next prime is 42401059. The reversal of 42401039 is 93010424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42401039 - 2¹² = 42396943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42401033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347489 + ... + 347610.

It is an arithmetic number, because the mean of its divisors is an integer number (10774050).

Almost surely, 2^42401039 is an apocalyptic number.

42401039 is a deficient number, since it is larger than the sum of its proper divisors (695161).

42401039 is an equidigital number, since it uses as much as digits as its factorization.

42401039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695160.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42401039 is about 6511.6080195294. The cubic root of 42401039 is about 348.7055285166.

The spelling of 42401039 in words is "forty-two million, four hundred one thousand, thirty-nine".