400141442 has 8 divisors (see below), whose sum is σ = 626308416. Its totient is φ = 191371972.

The previous prime is 400141429. The next prime is 400141451. The reversal of 400141442 is 244141004.

It is a happy number.

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

It is a super-2 number, since 2×400141442² = 320226347211678728, 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, 4349318 + ... + 4349409.

It is an arithmetic number, because the mean of its divisors is an integer number (78288552).

Almost surely, 2^400141442 is an apocalyptic number.

400141442 is a deficient number, since it is larger than the sum of its proper divisors (226166974).

400141442 is a wasteful number, since it uses less digits than its factorization.

400141442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8698752.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 400141442 is about 20003.5357374640. The cubic root of 400141442 is about 736.8931356242.

Adding to 400141442 its reverse (244141004), we get a palindrome (644282446).

The spelling of 400141442 in words is "four hundred million, one hundred forty-one thousand, four hundred forty-two".