142025505545421 has 12 divisors (see below), whose sum is σ = 205148788369980. Its totient is φ = 94683284556480.

The previous prime is 142025505545401. The next prime is 142025505545489. The reversal of 142025505545421 is 124545505520241.

142025505545421 is a `hidden beast` number, since 1 + 4 + 2 + 0 + 2 + 5 + 50 + 5 + 54 + 542 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 94880652048900 + 47144853496521 = 9740670^2 + 6866211^2 .

It is not a de Polignac number, because 142025505545421 - 2²³ = 142025497156813 is a prime.

It is a super-2 number, since 2×142025505545421² (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 (142025505545401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29810166 + ... + 34244663.

It is an arithmetic number, because the mean of its divisors is an integer number (17095732364165).

Almost surely, 2^{142025505545421} is an apocalyptic number.

It is an amenable number.

142025505545421 is a deficient number, since it is larger than the sum of its proper divisors (63123282824559).

142025505545421 is a wasteful number, since it uses less digits than its factorization.

142025505545421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64301196 (or 64301193 counting only the distinct ones).

The product of its (nonzero) digits is 1600000, while the sum is 45.

The spelling of 142025505545421 in words is "one hundred forty-two trillion, twenty-five billion, five hundred five million, five hundred forty-five thousand, four hundred twenty-one".