42401889 has 24 divisors (see below), whose sum is σ = 63295232. Its totient is φ = 27332640.

The previous prime is 42401881. The next prime is 42401897. The reversal of 42401889 is 98810424.

It is an interprime number because it is at equal distance from previous prime (42401881) and next prime (42401897).

It is not a de Polignac number, because 42401889 - 2³ = 42401881 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42401881) 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, 73974 + ... + 74544.

Almost surely, 2^42401889 is an apocalyptic number.

It is an amenable number.

42401889 is a deficient number, since it is larger than the sum of its proper divisors (20893343).

42401889 is a wasteful number, since it uses less digits than its factorization.

42401889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 42401889 is about 6511.6732872588. The cubic root of 42401889 is about 348.7078586302.

The spelling of 42401889 in words is "forty-two million, four hundred one thousand, eight hundred eighty-nine".