90401442 has 32 divisors (see below), whose sum is σ = 184246272. Its totient is φ = 29565264.

The previous prime is 90401419. The next prime is 90401453. The reversal of 90401442 is 24410409.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82623 + ... + 83709.

It is an arithmetic number, because the mean of its divisors is an integer number (5757696).

Almost surely, 2^90401442 is an apocalyptic number.

90401442 is an abundant number, since it is smaller than the sum of its proper divisors (93844830).

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

90401442 is a wasteful number, since it uses less digits than its factorization.

90401442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 90401442 is about 9507.9672906463. The cubic root of 90401442 is about 448.8057916424.

The spelling of 90401442 in words is "ninety million, four hundred one thousand, four hundred forty-two".