1240452465 has 32 divisors (see below), whose sum is σ = 2269618176. Its totient is φ = 566723520.

The previous prime is 1240452457. The next prime is 1240452497. The reversal of 1240452465 is 5642540421.

It is not a de Polignac number, because 1240452465 - 2³ = 1240452457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278244 + ... + 282666.

It is an arithmetic number, because the mean of its divisors is an integer number (70925568).

Almost surely, 2^1240452465 is an apocalyptic number.

1240452465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240452465 is a deficient number, since it is larger than the sum of its proper divisors (1029165711).

1240452465 is a wasteful number, since it uses less digits than its factorization.

1240452465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7109.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 1240452465 is about 35220.0577086410. The cubic root of 1240452465 is about 1074.4677271208.

Adding to 1240452465 its reverse (5642540421), we get a palindrome (6882992886).

The spelling of 1240452465 in words is "one billion, two hundred forty million, four hundred fifty-two thousand, four hundred sixty-five".