139002402 has 64 divisors (see below), whose sum is σ = 354714624. Its totient is φ = 35259840.

The previous prime is 139002401. The next prime is 139002403. The reversal of 139002402 is 204200931.

It is an interprime number because it is at equal distance from previous prime (139002401) and next prime (139002403).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (139002401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16368 + ... + 23364.

It is an arithmetic number, because the mean of its divisors is an integer number (5542416).

Almost surely, 2^139002402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139002402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177357312).

139002402 is an abundant number, since it is smaller than the sum of its proper divisors (215712222).

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

139002402 is a wasteful number, since it uses less digits than its factorization.

139002402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7063.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 139002402 is about 11789.9279896020. The cubic root of 139002402 is about 518.0131305587.

The spelling of 139002402 in words is "one hundred thirty-nine million, two thousand, four hundred two".