501122142 has 12 divisors (see below), whose sum is σ = 1085764680. Its totient is φ = 167040708.

The previous prime is 501122123. The next prime is 501122173. The reversal of 501122142 is 241221105.

501122142 is a `hidden beast` number, since 501 + 1 + 22 + 142 = 666.

It is a super-2 number, since 2×501122142² = 502246802405336328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 27840119 = 501122142 / (5 + 0 + 1 + 1 + 2 + 2 + 1 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13920042 + ... + 13920077.

It is an arithmetic number, because the mean of its divisors is an integer number (90480390).

Almost surely, 2^501122142 is an apocalyptic number.

501122142 is an abundant number, since it is smaller than the sum of its proper divisors (584642538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501122142 is a wasteful number, since it uses less digits than its factorization.

501122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27840127 (or 27840124 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 501122142 is about 22385.7575703839. The cubic root of 501122142 is about 794.2938454765.

Adding to 501122142 its reverse (241221105), we get a palindrome (742343247).

It can be divided in two parts, 501122 and 142, that added together give a square (501264 = 708²).

The spelling of 501122142 in words is "five hundred one million, one hundred twenty-two thousand, one hundred forty-two".