1240199453 has 8 divisors (see below), whose sum is σ = 1313820288. Its totient is φ = 1166652864.

The previous prime is 1240199449. The next prime is 1240199461. The reversal of 1240199453 is 3549910421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240199453 - 2² = 1240199449 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 (1240199473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17900 + ... + 52922.

It is an arithmetic number, because the mean of its divisors is an integer number (164227536).

Almost surely, 2^1240199453 is an apocalyptic number.

It is an amenable number.

1240199453 is a deficient number, since it is larger than the sum of its proper divisors (73620835).

1240199453 is a wasteful number, since it uses less digits than its factorization.

1240199453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37123.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1240199453 is about 35216.4656517374. The cubic root of 1240199453 is about 1074.3946699846.

The spelling of 1240199453 in words is "one billion, two hundred forty million, one hundred ninety-nine thousand, four hundred fifty-three".