1240423400044 has 6 divisors (see below), whose sum is σ = 2170740950084. Its totient is φ = 620211700020.

The previous prime is 1240423399961. The next prime is 1240423400053. The reversal of 1240423400044 is 4400043240421.

It is a super-2 number, since 2×1240423400044² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1240423399985 and 1240423400021.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155052925002 + ... + 155052925009.

Almost surely, 2^{1240423400044} is an apocalyptic number.

It is an amenable number.

1240423400044 is a deficient number, since it is larger than the sum of its proper divisors (930317550040).

1240423400044 is a wasteful number, since it uses less digits than its factorization.

1240423400044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310105850015 (or 310105850013 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 1240423400044 its reverse (4400043240421), we get a palindrome (5640466640465).

The spelling of 1240423400044 in words is "one trillion, two hundred forty billion, four hundred twenty-three million, four hundred thousand, forty-four".