400667123242 has 16 divisors (see below), whose sum is σ = 624326227200. Its totient is φ = 192616189360.

The previous prime is 400667123237. The next prime is 400667123267. The reversal of 400667123242 is 242321766004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14438134 + ... + 14465857.

It is an arithmetic number, because the mean of its divisors is an integer number (39020389200).

Almost surely, 2^400667123242 is an apocalyptic number.

400667123242 is a deficient number, since it is larger than the sum of its proper divisors (223659103958).

400667123242 is a wasteful number, since it uses less digits than its factorization.

400667123242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28904261.

The product of its (nonzero) digits is 96768, while the sum is 37.

Adding to 400667123242 its reverse (242321766004), we get a palindrome (642988889246).

The spelling of 400667123242 in words is "four hundred billion, six hundred sixty-seven million, one hundred twenty-three thousand, two hundred forty-two".