139042030 has 16 divisors (see below), whose sum is σ = 253089360. Its totient is φ = 54991552.

The previous prime is 139041977. The next prime is 139042039. The reversal of 139042030 is 30240931.

139042030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139042030² = 38665372213041800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139041992 and 139042010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139042039) 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, 77224 + ... + 79003.

It is an arithmetic number, because the mean of its divisors is an integer number (15818085).

Almost surely, 2^139042030 is an apocalyptic number.

139042030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139042030 is a deficient number, since it is larger than the sum of its proper divisors (114047330).

139042030 is a wasteful number, since it uses less digits than its factorization.

139042030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156323.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 139042030 is about 11791.6084568646. The cubic root of 139042030 is about 518.0623524273.

Adding to 139042030 its reverse (30240931), we get a palindrome (169282961).

The spelling of 139042030 in words is "one hundred thirty-nine million, forty-two thousand, thirty".