1240001204501 has 4 divisors (see below), whose sum is σ = 1242172835904. Its totient is φ = 1237829573100.

The previous prime is 1240001204483. The next prime is 1240001204521. The reversal of 1240001204501 is 1054021000421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1240001204501 - 2¹⁰ = 1240001203477 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 (1240001204521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085814845 + ... + 1085815986.

It is an arithmetic number, because the mean of its divisors is an integer number (310543208976).

Almost surely, 2^{1240001204501} is an apocalyptic number.

It is an amenable number.

1240001204501 is a deficient number, since it is larger than the sum of its proper divisors (2171631403).

1240001204501 is an equidigital number, since it uses as much as digits as its factorization.

1240001204501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171631402.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 1240001204501 its reverse (1054021000421), we get a palindrome (2294022204922).

The spelling of 1240001204501 in words is "one trillion, two hundred forty billion, one million, two hundred four thousand, five hundred one".