42405874 has 12 divisors (see below), whose sum is σ = 73994094. Its totient is φ = 18173904.

The previous prime is 42405827. The next prime is 42405877. The reversal of 42405874 is 47850424.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 480249 = 6475^2 + 693^2 .

It is not an unprimeable number, because it can be changed into a prime (42405877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216259 + ... + 216454.

Almost surely, 2^42405874 is an apocalyptic number.

42405874 is a deficient number, since it is larger than the sum of its proper divisors (31588220).

42405874 is a wasteful number, since it uses less digits than its factorization.

42405874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432729 (or 432722 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 42405874 is about 6511.9792690088. The cubic root of 42405874 is about 348.7187823361.

The spelling of 42405874 in words is "forty-two million, four hundred five thousand, eight hundred seventy-four".