122145130 has 16 divisors (see below), whose sum is σ = 220252680. Its totient is φ = 48771072.

The previous prime is 122145097. The next prime is 122145137. The reversal of 122145130 is 31541221.

It can be written as a sum of positive squares in 4 ways, for example, as 117440569 + 4704561 = 10837^2 + 2169^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122145098 and 122145107.

It is not an unprimeable number, because it can be changed into a prime (122145137) 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, 4815 + ... + 16354.

Almost surely, 2^122145130 is an apocalyptic number.

122145130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122145130 is a deficient number, since it is larger than the sum of its proper divisors (98107550).

122145130 is a wasteful number, since it uses less digits than its factorization.

122145130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21753.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 122145130 is about 11051.9287909396. The cubic root of 122145130 is about 496.1641544979.

Adding to 122145130 its reverse (31541221), we get a palindrome (153686351).

The spelling of 122145130 in words is "one hundred twenty-two million, one hundred forty-five thousand, one hundred thirty".