401540332 has 12 divisors (see below), whose sum is σ = 703659376. Its totient is φ = 200494800.

The previous prime is 401540329. The next prime is 401540383. The reversal of 401540332 is 233045104.

It is a super-2 number, since 2×401540332² = 322469276445340448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65544 + ... + 71407.

Almost surely, 2^401540332 is an apocalyptic number.

It is an amenable number.

401540332 is a deficient number, since it is larger than the sum of its proper divisors (302119044).

401540332 is a wasteful number, since it uses less digits than its factorization.

401540332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137688 (or 137686 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 401540332 is about 20038.4712989789. The cubic root of 401540332 is about 737.7508602507.

Adding to 401540332 its reverse (233045104), we get a palindrome (634585436).

The spelling of 401540332 in words is "four hundred one million, five hundred forty thousand, three hundred thirty-two".