400132442 has 8 divisors (see below), whose sum is σ = 609157056. Its totient is φ = 197080092.

The previous prime is 400132429. The next prime is 400132463. The reversal of 400132442 is 244231004.

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

It is a super-2 number, since 2×400132442² = 320211942281766728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492898 + ... + 1493165.

It is an arithmetic number, because the mean of its divisors is an integer number (76144632).

Almost surely, 2^400132442 is an apocalyptic number.

400132442 is a deficient number, since it is larger than the sum of its proper divisors (209024614).

400132442 is a wasteful number, since it uses less digits than its factorization.

400132442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986132.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400132442 is about 20003.3107759691. The cubic root of 400132442 is about 736.8876108379.

Adding to 400132442 its reverse (244231004), we get a palindrome (644363446).

The spelling of 400132442 in words is "four hundred million, one hundred thirty-two thousand, four hundred forty-two".