1251014040423 has 160 divisors (see below), whose sum is σ = 2354565058560. Its totient is φ = 646149208320.

The previous prime is 1251014040421. The next prime is 1251014040467. The reversal of 1251014040423 is 3240404101521.

1251014040423 is a `hidden beast` number, since 1 + 2 + 510 + 140 + 4 + 0 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 1251014040423 - 2¹ = 1251014040421 is a prime.

It is a super-2 number, since 2×1251014040423² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251014040421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 17739693 + ... + 17810073.

It is an arithmetic number, because the mean of its divisors is an integer number (14716031616).

Almost surely, 2^{1251014040423} is an apocalyptic number.

1251014040423 is a deficient number, since it is larger than the sum of its proper divisors (1103551018137).

1251014040423 is a wasteful number, since it uses less digits than its factorization.

1251014040423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70499 (or 70490 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 1251014040423 its reverse (3240404101521), we get a palindrome (4491418141944).

The spelling of 1251014040423 in words is "one trillion, two hundred fifty-one billion, fourteen million, forty thousand, four hundred twenty-three".