139742232 has 32 divisors (see below), whose sum is σ = 399264000. Its totient is φ = 39926304.

The previous prime is 139742219. The next prime is 139742237. The reversal of 139742232 is 232247931.

It is a junction number, because it is equal to n+sod(n) for n = 139742193 and 139742202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139742237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415732 + ... + 416067.

It is an arithmetic number, because the mean of its divisors is an integer number (12477000).

Almost surely, 2^139742232 is an apocalyptic number.

139742232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139742232 is an abundant number, since it is smaller than the sum of its proper divisors (259521768).

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

139742232 is a wasteful number, since it uses less digits than its factorization.

139742232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831815 (or 831811 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 139742232 is about 11821.2618615781. The cubic root of 139742232 is about 518.9305337285.

It can be divided in two parts, 139 and 742232, that added together give a triangular number (742371 = T₁₂₁₈).

The spelling of 139742232 in words is "one hundred thirty-nine million, seven hundred forty-two thousand, two hundred thirty-two".