122987241 has 20 divisors (see below), whose sum is σ = 197855812. Its totient is φ = 75683808.

The previous prime is 122987201. The next prime is 122987243. The reversal of 122987241 is 142789221.

It can be written as a sum of positive squares in 2 ways, for example, as 32661225 + 90326016 = 5715^2 + 9504^2 .

It is not a de Polignac number, because 122987241 - 2¹⁰ = 122986217 is a prime.

It is a super-2 number, since 2×122987241² = 30251722897584162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122987196 and 122987205.

It is not an unprimeable number, because it can be changed into a prime (122987243) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57346 + ... + 59451.

Almost surely, 2^122987241 is an apocalyptic number.

It is an amenable number.

122987241 is a deficient number, since it is larger than the sum of its proper divisors (74868571).

122987241 is a wasteful number, since it uses less digits than its factorization.

122987241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116822 (or 116813 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 122987241 is about 11089.9612713481. The cubic root of 122987241 is about 497.3017868165.

The spelling of 122987241 in words is "one hundred twenty-two million, nine hundred eighty-seven thousand, two hundred forty-one".