42403398 has 32 divisors (see below), whose sum is σ = 89337600. Its totient is φ = 13391136.

The previous prime is 42403379. The next prime is 42403399. The reversal of 42403398 is 89330424.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42403399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13633 + ... + 16451.

It is an arithmetic number, because the mean of its divisors is an integer number (2791800).

Almost surely, 2^42403398 is an apocalyptic number.

42403398 is an abundant number, since it is smaller than the sum of its proper divisors (46934202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42403398 is a wasteful number, since it uses less digits than its factorization.

42403398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 42403398 is about 6511.7891550633. The cubic root of 42403398 is about 348.7119951906.

The spelling of 42403398 in words is "forty-two million, four hundred three thousand, three hundred ninety-eight".