142038765872421 has 32 divisors (see below), whose sum is σ = 207432806999040. Its totient is φ = 85738456195200.

The previous prime is 142038765872417. The next prime is 142038765872431. The reversal of 142038765872421 is 124278567830241.

It is not a de Polignac number, because 142038765872421 - 2² = 142038765872417 is a prime.

It is a super-2 number, since 2×142038765872421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142038765872431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2216161 + ... + 16999673.

It is an arithmetic number, because the mean of its divisors is an integer number (6482275218720).

Almost surely, 2^{142038765872421} is an apocalyptic number.

142038765872421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142038765872421 is a deficient number, since it is larger than the sum of its proper divisors (65394041126619).

142038765872421 is a wasteful number, since it uses less digits than its factorization.

142038765872421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14784697.

The product of its (nonzero) digits is 36126720, while the sum is 60.

The spelling of 142038765872421 in words is "one hundred forty-two trillion, thirty-eight billion, seven hundred sixty-five million, eight hundred seventy-two thousand, four hundred twenty-one".