142309930881 has 4 divisors (see below), whose sum is σ = 189746574512. Its totient is φ = 94873287252.

The previous prime is 142309930853. The next prime is 142309930901. The reversal of 142309930881 is 188039903241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 142309930881 - 2⁷ = 142309930753 is a prime.

It is a super-2 number, since 2×142309930881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142309930881.

It is not an unprimeable number, because it can be changed into a prime (142309930801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23718321811 + ... + 23718321816.

It is an arithmetic number, because the mean of its divisors is an integer number (47436643628).

Almost surely, 2^142309930881 is an apocalyptic number.

It is an amenable number.

142309930881 is a deficient number, since it is larger than the sum of its proper divisors (47436643631).

142309930881 is an equidigital number, since it uses as much as digits as its factorization.

142309930881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47436643630.

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 142309930881 in words is "one hundred forty-two billion, three hundred nine million, nine hundred thirty thousand, eight hundred eighty-one".