1372140243 has 20 divisors (see below), whose sum is σ = 2065403208. Its totient is φ = 907770240.

The previous prime is 1372140229. The next prime is 1372140257. The reversal of 1372140243 is 3420412731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1372140229) and next prime (1372140257).

It is not a de Polignac number, because 1372140243 - 2⁸ = 1372139987 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1372140643) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54046 + ... + 75267.

Almost surely, 2^1372140243 is an apocalyptic number.

1372140243 is a deficient number, since it is larger than the sum of its proper divisors (693262965).

1372140243 is a wasteful number, since it uses less digits than its factorization.

1372140243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129456 (or 129447 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1372140243 is about 37042.4114090862. The cubic root of 1372140243 is about 1111.2185959527.

Adding to 1372140243 its reverse (3420412731), we get a palindrome (4792552974).

The spelling of 1372140243 in words is "one billion, three hundred seventy-two million, one hundred forty thousand, two hundred forty-three".