122140426 has 4 divisors (see below), whose sum is σ = 183210642. Its totient is φ = 61070212.

The previous prime is 122140423. The next prime is 122140439. The reversal of 122140426 is 624041221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624041221 = 23 ⋅27132227.

It can be written as a sum of positive squares in only one way, i.e., 122080401 + 60025 = 11049^2 + 245^2 .

It is a super-2 number, since 2×122140426² = 29836567326922952, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 122140397 and 122140406.

It is not an unprimeable number, because it can be changed into a prime (122140423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30535105 + ... + 30535108.

Almost surely, 2^122140426 is an apocalyptic number.

122140426 is a deficient number, since it is larger than the sum of its proper divisors (61070216).

122140426 is an equidigital number, since it uses as much as digits as its factorization.

122140426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61070215.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 122140426 is about 11051.7159753588. The cubic root of 122140426 is about 496.1577850636.

Adding to 122140426 its reverse (624041221), we get a palindrome (746181647).

The spelling of 122140426 in words is "one hundred twenty-two million, one hundred forty thousand, four hundred twenty-six".