139426043904 has 384 divisors, whose sum is σ = 477950054400. Its totient is φ = 39827054592.

The previous prime is 139426043863. The next prime is 139426043921. The reversal of 139426043904 is 409340624931.

139426043904 is a `hidden beast` number, since 1 + 3 + 9 + 4 + 2 + 604 + 39 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×139426043904² (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 139426043904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31350609 + ... + 31355055.

It is an arithmetic number, because the mean of its divisors is an integer number (1244661600).

Almost surely, 2^139426043904 is an apocalyptic number.

139426043904 is a gapful number since it is divisible by the number (14) 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 139426043904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238975027200).

139426043904 is an abundant number, since it is smaller than the sum of its proper divisors (338524010496).

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

139426043904 is an frugal number, since it uses more digits than its factorization.

139426043904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497 (or 4459 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 139426043904 in words is "one hundred thirty-nine billion, four hundred twenty-six million, forty-three thousand, nine hundred four".