139510742 has 12 divisors (see below), whose sum is σ = 243432180. Its totient is φ = 59790276.

The previous prime is 139510729. The next prime is 139510781. The reversal of 139510742 is 247015931.

It is a junction number, because it is equal to n+sod(n) for n = 139510699 and 139510708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711692 + ... + 711887.

It is an arithmetic number, because the mean of its divisors is an integer number (20286015).

Almost surely, 2^139510742 is an apocalyptic number.

139510742 is a deficient number, since it is larger than the sum of its proper divisors (103921438).

139510742 is a wasteful number, since it uses less digits than its factorization.

139510742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423595 (or 1423588 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 139510742 is about 11811.4665473852. The cubic root of 139510742 is about 518.6438305587.

The spelling of 139510742 in words is "one hundred thirty-nine million, five hundred ten thousand, seven hundred forty-two".