42400946 has 8 divisors (see below), whose sum is σ = 72687360. Its totient is φ = 18171828.

The previous prime is 42400921. The next prime is 42400949. The reversal of 42400946 is 64900424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42400949) 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, 1514306 + ... + 1514333.

It is an arithmetic number, because the mean of its divisors is an integer number (9085920).

Almost surely, 2^42400946 is an apocalyptic number.

42400946 is a deficient number, since it is larger than the sum of its proper divisors (30286414).

42400946 is a wasteful number, since it uses less digits than its factorization.

42400946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028648.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 42400946 is about 6511.6008784323. The cubic root of 42400946 is about 348.7052735729.

The spelling of 42400946 in words is "forty-two million, four hundred thousand, nine hundred forty-six".