42044401 has 24 divisors (see below), whose sum is σ = 51217920. Its totient is φ = 34372800.

The previous prime is 42044399. The next prime is 42044407. The reversal of 42044401 is 10444024.

It is not a de Polignac number, because 42044401 - 2¹ = 42044399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42044407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135036 + ... + 135346.

It is an arithmetic number, because the mean of its divisors is an integer number (2134080).

Almost surely, 2^42044401 is an apocalyptic number.

It is an amenable number.

42044401 is a deficient number, since it is larger than the sum of its proper divisors (9173519).

42044401 is a wasteful number, since it uses less digits than its factorization.

42044401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 42044401 is about 6484.1654050464. The cubic root of 42044401 is about 347.7251126661.

Adding to 42044401 its reverse (10444024), we get a palindrome (52488425).

The spelling of 42044401 in words is "forty-two million, forty-four thousand, four hundred one".