139643034 has 16 divisors (see below), whose sum is σ = 288295680. Its totient is φ = 45046080.

The previous prime is 139642999. The next prime is 139643039. The reversal of 139643034 is 430346931.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139642986 and 139643004.

It is not an unprimeable number, because it can be changed into a prime (139643039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375199 + ... + 375570.

It is an arithmetic number, because the mean of its divisors is an integer number (18018480).

Almost surely, 2^139643034 is an apocalyptic number.

139643034 is an abundant number, since it is smaller than the sum of its proper divisors (148652646).

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

139643034 is a wasteful number, since it uses less digits than its factorization.

139643034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750805.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 139643034 is about 11817.0653717410. The cubic root of 139643034 is about 518.8077146025.

Adding to 139643034 its reverse (430346931), we get a palindrome (569989965).

The spelling of 139643034 in words is "one hundred thirty-nine million, six hundred forty-three thousand, thirty-four".