1240670445 has 32 divisors (see below), whose sum is σ = 2314963200. Its totient is φ = 567161280.

The previous prime is 1240670441. The next prime is 1240670447. The reversal of 1240670445 is 5440760421.

It is not a de Polignac number, because 1240670445 - 2² = 1240670441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240670441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115426 + ... + 125715.

It is an arithmetic number, because the mean of its divisors is an integer number (72342600).

Almost surely, 2^1240670445 is an apocalyptic number.

1240670445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240670445 is a deficient number, since it is larger than the sum of its proper divisors (1074292755).

1240670445 is an equidigital number, since it uses as much as digits as its factorization.

1240670445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241170 (or 241156 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 1240670445 is about 35223.1521161863. The cubic root of 1240670445 is about 1074.5306608120.

The spelling of 1240670445 in words is "one billion, two hundred forty million, six hundred seventy thousand, four hundred forty-five".