122654139 has 8 divisors (see below), whose sum is σ = 172146240. Its totient is φ = 77465736.

The previous prime is 122654123. The next prime is 122654141. The reversal of 122654139 is 931456221.

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

It is not a de Polignac number, because 122654139 - 2⁴ = 122654123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122654339) 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, 1075857 + ... + 1075970.

It is an arithmetic number, because the mean of its divisors is an integer number (21518280).

Almost surely, 2^122654139 is an apocalyptic number.

122654139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

122654139 is a deficient number, since it is larger than the sum of its proper divisors (49492101).

122654139 is a wasteful number, since it uses less digits than its factorization.

122654139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151849.

The product of its digits is 12960, while the sum is 33.

The square root of 122654139 is about 11074.9329117607. The cubic root of 122654139 is about 496.8524122954.

The spelling of 122654139 in words is "one hundred twenty-two million, six hundred fifty-four thousand, one hundred thirty-nine".