139962730 has 8 divisors (see below), whose sum is σ = 251932932. Its totient is φ = 55985088.

The previous prime is 139962701. The next prime is 139962733. The reversal of 139962730 is 37269931.

139962730 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 135047641 + 4915089 = 11621^2 + 2217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (139962733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6998127 + ... + 6998146.

Almost surely, 2^139962730 is an apocalyptic number.

139962730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139962730 is a deficient number, since it is larger than the sum of its proper divisors (111970202).

139962730 is a wasteful number, since it uses less digits than its factorization.

139962730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13996280.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 139962730 is about 11830.5845164134. The cubic root of 139962730 is about 519.2033288921.

The spelling of 139962730 in words is "one hundred thirty-nine million, nine hundred sixty-two thousand, seven hundred thirty".