123319147240 has 32 divisors (see below), whose sum is σ = 278679753000. Its totient is φ = 49112250624.

The previous prime is 123319147213. The next prime is 123319147253. The reversal of 123319147240 is 42741913321.

It can be written as a sum of positive squares in 4 ways, for example, as 93118963716 + 30200183524 = 305154^2 + 173782^2 .

It is a super-2 number, since 2×123319147240² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123319147240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6722235 + ... + 6740554.

Almost surely, 2^123319147240 is an apocalyptic number.

123319147240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123319147240 is an abundant number, since it is smaller than the sum of its proper divisors (155360605760).

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

123319147240 is a wasteful number, since it uses less digits than its factorization.

123319147240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13463029 (or 13463025 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 123319147240 in words is "one hundred twenty-three billion, three hundred nineteen million, one hundred forty-seven thousand, two hundred forty".