1240764722 has 4 divisors (see below), whose sum is σ = 1861147086. Its totient is φ = 620382360.

The previous prime is 1240764719. The next prime is 1240764751. The reversal of 1240764722 is 2274670421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2274670421 = 47 ⋅48397243.

It can be written as a sum of positive squares in only one way, i.e., 1024704121 + 216060601 = 32011^2 + 14699^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310191179 + ... + 310191182.

Almost surely, 2^1240764722 is an apocalyptic number.

1240764722 is a deficient number, since it is larger than the sum of its proper divisors (620382364).

1240764722 is an equidigital number, since it uses as much as digits as its factorization.

1240764722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620382363.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 1240764722 is about 35224.4903724667. The cubic root of 1240764722 is about 1074.5578775377.

The spelling of 1240764722 in words is "one billion, two hundred forty million, seven hundred sixty-four thousand, seven hundred twenty-two".