145639979142 has 32 divisors (see below), whose sum is σ = 332905638912. Its totient is φ = 41609640384.

The previous prime is 145639979141. The next prime is 145639979143. The reversal of 145639979142 is 241979936541.

It is an interprime number because it is at equal distance from previous prime (145639979141) and next prime (145639979143).

It is a super-2 number, since 2×145639979142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145639979141) 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 15 ways as a sum of consecutive naturals, for example, 1158963 + ... + 1278465.

It is an arithmetic number, because the mean of its divisors is an integer number (10403301216).

Almost surely, 2^145639979142 is an apocalyptic number.

145639979142 is an abundant number, since it is smaller than the sum of its proper divisors (187265659770).

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

145639979142 is a wasteful number, since it uses less digits than its factorization.

145639979142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148532.

The product of its digits is 14696640, while the sum is 60.

The spelling of 145639979142 in words is "one hundred forty-five billion, six hundred thirty-nine million, nine hundred seventy-nine thousand, one hundred forty-two".