122072740 has 12 divisors (see below), whose sum is σ = 256352796. Its totient is φ = 48829088.

The previous prime is 122072689. The next prime is 122072747. The reversal of 122072740 is 47270221.

It can be written as a sum of positive squares in 2 ways, for example, as 63489024 + 58583716 = 7968^2 + 7654^2 .

It is a super-2 number, since 2×122072740² = 29803507702215200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122072747) 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, 3051799 + ... + 3051838.

It is an arithmetic number, because the mean of its divisors is an integer number (21362733).

Almost surely, 2^122072740 is an apocalyptic number.

122072740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122072740 is an abundant number, since it is smaller than the sum of its proper divisors (134280056).

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

122072740 is a wasteful number, since it uses less digits than its factorization.

122072740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6103646 (or 6103644 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 122072740 is about 11048.6533116032. The cubic root of 122072740 is about 496.0661169666.

The spelling of 122072740 in words is "one hundred twenty-two million, seventy-two thousand, seven hundred forty".