139102254 has 12 divisors (see below), whose sum is σ = 301388256. Its totient is φ = 46367412.

The previous prime is 139102253. The next prime is 139102259. The reversal of 139102254 is 452201931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139102253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3863934 + ... + 3863969.

It is an arithmetic number, because the mean of its divisors is an integer number (25115688).

Almost surely, 2^139102254 is an apocalyptic number.

139102254 is an abundant number, since it is smaller than the sum of its proper divisors (162286002).

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

139102254 is a wasteful number, since it uses less digits than its factorization.

139102254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727911 (or 7727908 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 139102254 is about 11794.1618608530. The cubic root of 139102254 is about 518.1371386475.

The spelling of 139102254 in words is "one hundred thirty-nine million, one hundred two thousand, two hundred fifty-four".