42401577 has 4 divisors (see below), whose sum is σ = 56535440. Its totient is φ = 28267716.

The previous prime is 42401563. The next prime is 42401599. The reversal of 42401577 is 77510424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42401577 - 2⁴ = 42401561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42400577) 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, 7066927 + ... + 7066932.

It is an arithmetic number, because the mean of its divisors is an integer number (14133860).

Almost surely, 2^42401577 is an apocalyptic number.

It is an amenable number.

42401577 is a deficient number, since it is larger than the sum of its proper divisors (14133863).

42401577 is a wasteful number, since it uses less digits than its factorization.

42401577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14133862.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 42401577 is about 6511.6493302388. The cubic root of 42401577 is about 348.7070033451.

The spelling of 42401577 in words is "forty-two million, four hundred one thousand, five hundred seventy-seven".