142621762090 has 8 divisors (see below), whose sum is σ = 256719171780. Its totient is φ = 57048704832.

The previous prime is 142621762067. The next prime is 142621762091. The reversal of 142621762090 is 90267126241.

It can be written as a sum of positive squares in 2 ways, for example, as 135026116681 + 7595645409 = 367459^2 + 87153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×142621762090² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142621762091) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7131088095 + ... + 7131088114.

Almost surely, 2^142621762090 is an apocalyptic number.

142621762090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142621762090 is a deficient number, since it is larger than the sum of its proper divisors (114097409690).

142621762090 is a wasteful number, since it uses less digits than its factorization.

142621762090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14262176216.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 142621762090 in words is "one hundred forty-two billion, six hundred twenty-one million, seven hundred sixty-two thousand, ninety".