1249183223420 has 48 divisors (see below), whose sum is σ = 2863727395200. Its totient is φ = 453936985920.

The previous prime is 1249183223399. The next prime is 1249183223447. The reversal of 1249183223420 is 243223819421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1624910 + ... + 2266869.

It is an arithmetic number, because the mean of its divisors is an integer number (59660987400).

Almost surely, 2^{1249183223420} is an apocalyptic number.

1249183223420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249183223420 is an abundant number, since it is smaller than the sum of its proper divisors (1614544171780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249183223420 is a wasteful number, since it uses less digits than its factorization.

1249183223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3893258 (or 3893256 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 1249183223420 in words is "one trillion, two hundred forty-nine billion, one hundred eighty-three million, two hundred twenty-three thousand, four hundred twenty".