139241900 has 72 divisors (see below), whose sum is σ = 365664096. Its totient is φ = 44928000.

The previous prime is 139241897. The next prime is 139241903. The reversal of 139241900 is 9142931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139241897) and next prime (139241903).

It is a super-2 number, since 2×139241900² = 38776613431220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139241903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6050 + ... + 17750.

It is an arithmetic number, because the mean of its divisors is an integer number (5078668).

Almost surely, 2^139241900 is an apocalyptic number.

139241900 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 139241900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182832048).

139241900 is an abundant number, since it is smaller than the sum of its proper divisors (226422196).

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

139241900 is a wasteful number, since it uses less digits than its factorization.

139241900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11739 (or 11732 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 139241900 is about 11800.0805081999. The cubic root of 139241900 is about 518.3104681644.

It can be divided in two parts, 139 and 241900, that multiplied together give a triangular number (33624100 = T₈₂₀₀).

The spelling of 139241900 in words is "one hundred thirty-nine million, two hundred forty-one thousand, nine hundred".