138142700 has 18 divisors (see below), whose sum is σ = 299769876. Its totient is φ = 55257040.

The previous prime is 138142699. The next prime is 138142709. The reversal of 138142700 is 7241831.

It is a self number, because there is not a number n which added to its sum of digits gives 138142700.

It is not an unprimeable number, because it can be changed into a prime (138142709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 690614 + ... + 690813.

It is an arithmetic number, because the mean of its divisors is an integer number (16653882).

Almost surely, 2^138142700 is an apocalyptic number.

138142700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138142700 is an abundant number, since it is smaller than the sum of its proper divisors (161627176).

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

138142700 is a wasteful number, since it uses less digits than its factorization.

138142700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381441 (or 1381434 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 138142700 is about 11753.4122704855. The cubic root of 138142700 is about 516.9429855056.

The spelling of 138142700 in words is "one hundred thirty-eight million, one hundred forty-two thousand, seven hundred".