139902228039420 has 768 divisors, whose sum is σ = 568469422080000. Its totient is φ = 27712846586880.

The previous prime is 139902228039419. The next prime is 139902228039439. The reversal of 139902228039420 is 24930822209931.

139902228039420 is a `hidden beast` number, since 1 + 3 + 9 + 9 + 0 + 2 + 228 + 0 + 394 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 94525461 + ... + 95994099.

It is an arithmetic number, because the mean of its divisors is an integer number (740194560000).

Almost surely, 2^{139902228039420} is an apocalyptic number.

139902228039420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139902228039420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284234711040000).

139902228039420 is an abundant number, since it is smaller than the sum of its proper divisors (428567194040580).

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

139902228039420 is a wasteful number, since it uses less digits than its factorization.

139902228039420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468783 (or 1468775 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 139902228039420 in words is "one hundred thirty-nine trillion, nine hundred two billion, two hundred twenty-eight million, thirty-nine thousand, four hundred twenty".