133938399442 has 16 divisors (see below), whose sum is σ = 208025697240. Its totient is φ = 64600728192.

The previous prime is 133938399431. The next prime is 133938399481. The reversal of 133938399442 is 244993839331.

It can be written as a sum of positive squares in 4 ways, for example, as 122373332761 + 11565066681 = 349819^2 + 107541^2 .

It is a super-2 number, since 2×133938399442² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

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, 993003 + ... + 1119790.

Almost surely, 2^133938399442 is an apocalyptic number.

133938399442 is a deficient number, since it is larger than the sum of its proper divisors (74087297798).

133938399442 is a wasteful number, since it uses less digits than its factorization.

133938399442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113917.

The product of its digits is 15116544, while the sum is 58.

The spelling of 133938399442 in words is "one hundred thirty-three billion, nine hundred thirty-eight million, three hundred ninety-nine thousand, four hundred forty-two".