1240000396 has 6 divisors (see below), whose sum is σ = 2170000700. Its totient is φ = 620000196.

The previous prime is 1240000393. The next prime is 1240000429. The reversal of 1240000396 is 6930000421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240000396.

It is not an unprimeable number, because it can be changed into a prime (1240000393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155000046 + ... + 155000053.

Almost surely, 2^1240000396 is an apocalyptic number.

It is an amenable number.

1240000396 is a deficient number, since it is larger than the sum of its proper divisors (930000304).

1240000396 is a wasteful number, since it uses less digits than its factorization.

1240000396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310000103 (or 310000101 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1240000396 is about 35213.6393461397. The cubic root of 1240000396 is about 1074.3371853539.

Adding to 1240000396 its sum of digits (25), we get a palindrome (1240000421).

The spelling of 1240000396 in words is "one billion, two hundred forty million, three hundred ninety-six", and thus it is an aban number.