1240100253 has 32 divisors (see below), whose sum is σ = 2131000320. Its totient is φ = 698045040.

The previous prime is 1240100243. The next prime is 1240100273. The reversal of 1240100253 is 3520010421.

1240100253 is a `hidden beast` number, since 12 + 401 + 0 + 0 + 253 = 666.

It is not a de Polignac number, because 1240100253 - 2¹⁴ = 1240083869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240100243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36303 + ... + 61628.

It is an arithmetic number, because the mean of its divisors is an integer number (66593760).

Almost surely, 2^1240100253 is an apocalyptic number.

It is an amenable number.

1240100253 is a deficient number, since it is larger than the sum of its proper divisors (890900067).

1240100253 is an equidigital number, since it uses as much as digits as its factorization.

1240100253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98014 (or 98008 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1240100253 is about 35215.0571914913. The cubic root of 1240100253 is about 1074.3660233040.

Adding to 1240100253 its reverse (3520010421), we get a palindrome (4760110674).

The spelling of 1240100253 in words is "one billion, two hundred forty million, one hundred thousand, two hundred fifty-three".