122500040 has 32 divisors (see below), whose sum is σ = 296828280. Its totient is φ = 45230592.

The previous prime is 122500033. The next prime is 122500043. The reversal of 122500040 is 40005221.

It can be written as a sum of positive squares in 4 ways, for example, as 52911076 + 69588964 = 7274^2 + 8342^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122499988 and 122500024.

It is not an unprimeable number, because it can be changed into a prime (122500043) 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, 117269 + ... + 118308.

Almost surely, 2^122500040 is an apocalyptic number.

122500040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122500040 is an abundant number, since it is smaller than the sum of its proper divisors (174328240).

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

122500040 is a wasteful number, since it uses less digits than its factorization.

122500040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235601 (or 235597 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 122500040 is about 11067.9736176050. The cubic root of 122500040 is about 496.6442482461.

Adding to 122500040 its reverse (40005221), we get a palindrome (162505261).

It can be divided in two parts, 1225000 and 40, that multiplied together give a square (49000000 = 7000²).

The spelling of 122500040 in words is "one hundred twenty-two million, five hundred thousand, forty".