1240100451 has 6 divisors (see below), whose sum is σ = 1791256220. Its totient is φ = 826733628.

The previous prime is 1240100447. The next prime is 1240100461. The reversal of 1240100451 is 1540010421.

It is not a de Polignac number, because 1240100451 - 2² = 1240100447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240100431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68894461 + ... + 68894478.

Almost surely, 2^1240100451 is an apocalyptic number.

1240100451 is a deficient number, since it is larger than the sum of its proper divisors (551155769).

1240100451 is a wasteful number, since it uses less digits than its factorization.

1240100451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137788945 (or 137788942 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1240100451 is about 35215.0600027886. The cubic root of 1240100451 is about 1074.3660804834.

Adding to 1240100451 its reverse (1540010421), we get a palindrome (2780110872).

The spelling of 1240100451 in words is "one billion, two hundred forty million, one hundred thousand, four hundred fifty-one".