139228140 has 48 divisors (see below), whose sum is σ = 390364128. Its totient is φ = 37077504.

The previous prime is 139228127. The next prime is 139228153. The reversal of 139228140 is 41822931.

139228140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139228127) and next prime (139228153).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 139228098 and 139228107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71824 + ... + 73736.

It is an arithmetic number, because the mean of its divisors is an integer number (8132586).

Almost surely, 2^139228140 is an apocalyptic number.

139228140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139228140 is an abundant number, since it is smaller than the sum of its proper divisors (251135988).

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

139228140 is a wasteful number, since it uses less digits than its factorization.

139228140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138 (or 3136 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 139228140 is about 11799.4974469254. The cubic root of 139228140 is about 518.2933943120.

The spelling of 139228140 in words is "one hundred thirty-nine million, two hundred twenty-eight thousand, one hundred forty".