122561237 has 4 divisors (see below), whose sum is σ = 122607276. Its totient is φ = 122515200.

The previous prime is 122561209. The next prime is 122561293. The reversal of 122561237 is 732165221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37442161 + 85119076 = 6119^2 + 9226^2 .

It is a cyclic number.

It is not a de Polignac number, because 122561237 - 2²² = 118366933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122561297) 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, 18764 + ... + 24437.

It is an arithmetic number, because the mean of its divisors is an integer number (30651819).

Almost surely, 2^122561237 is an apocalyptic number.

It is an amenable number.

122561237 is a deficient number, since it is larger than the sum of its proper divisors (46039).

122561237 is an equidigital number, since it uses as much as digits as its factorization.

122561237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46038.

The product of its digits is 5040, while the sum is 29.

The square root of 122561237 is about 11070.7378706209. The cubic root of 122561237 is about 496.7269368676.

The spelling of 122561237 in words is "one hundred twenty-two million, five hundred sixty-one thousand, two hundred thirty-seven".