122742437615 has 16 divisors (see below), whose sum is σ = 170638413888. Its totient is φ = 83013278976.

The previous prime is 122742437611. The next prime is 122742437639. The reversal of 122742437615 is 516734247221.

It is a cyclic number.

It is not a de Polignac number, because 122742437615 - 2² = 122742437611 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 (122742437611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24017492 + ... + 24022601.

It is an arithmetic number, because the mean of its divisors is an integer number (10664900868).

Almost surely, 2^122742437615 is an apocalyptic number.

122742437615 is a deficient number, since it is larger than the sum of its proper divisors (47895976273).

122742437615 is an equidigital number, since it uses as much as digits as its factorization.

122742437615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48040178.

The product of its digits is 564480, while the sum is 44.

The spelling of 122742437615 in words is "one hundred twenty-two billion, seven hundred forty-two million, four hundred thirty-seven thousand, six hundred fifteen".