501122629442 has 18 divisors (see below), whose sum is σ = 762233201163. Its totient is φ = 247092927552.

The previous prime is 501122629433. The next prime is 501122629457. The reversal of 501122629442 is 244926221105.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 11681070241 + 489441559201 = 108079^2 + 699601^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=500561.

It is a super-2 number, since 2×501122629442² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501122629396 and 501122629405.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 73078478 + ... + 73085334.

Almost surely, 2^501122629442 is an apocalyptic number.

501122629442 is a deficient number, since it is larger than the sum of its proper divisors (261110571721).

501122629442 is an frugal number, since it uses more digits than its factorization.

501122629442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13862 (or 6932 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 501122629442 in words is "five hundred one billion, one hundred twenty-two million, six hundred twenty-nine thousand, four hundred forty-two".