1249969838420 has 24 divisors (see below), whose sum is σ = 2624985965448. Its totient is φ = 499978544000.

The previous prime is 1249969838419. The next prime is 1249969838437. The reversal of 1249969838420 is 248389699421.

It can be written as a sum of positive squares in 4 ways, for example, as 604434722116 + 645535116304 = 777454^2 + 803452^2 .

It is a super-3 number, since 3×1249969838420³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559010 + ... + 1677030.

It is an arithmetic number, because the mean of its divisors is an integer number (109374415227).

Almost surely, 2^{1249969838420} is an apocalyptic number.

1249969838420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 1118020×1118021.

It is an amenable number.

1249969838420 is an abundant number, since it is smaller than the sum of its proper divisors (1375016127028).

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

1249969838420 is a wasteful number, since it uses less digits than its factorization.

1249969838420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173931 (or 1173929 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 65.

The spelling of 1249969838420 in words is "one trillion, two hundred forty-nine billion, nine hundred sixty-nine million, eight hundred thirty-eight thousand, four hundred twenty".