1240115873 has 4 divisors (see below), whose sum is σ = 1241822400. Its totient is φ = 1238409348.

The previous prime is 1240115861. The next prime is 1240115911. The reversal of 1240115873 is 3785110421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1240115873 - 2⁶ = 1240115809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240115843) 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, 852173 + ... + 853626.

It is an arithmetic number, because the mean of its divisors is an integer number (310455600).

Almost surely, 2^1240115873 is an apocalyptic number.

It is an amenable number.

1240115873 is a deficient number, since it is larger than the sum of its proper divisors (1706527).

1240115873 is an equidigital number, since it uses as much as digits as its factorization.

1240115873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706526.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1240115873 is about 35215.2789709240. The cubic root of 1240115873 is about 1074.3705341024.

The spelling of 1240115873 in words is "one billion, two hundred forty million, one hundred fifteen thousand, eight hundred seventy-three".