1140780402 has 32 divisors (see below), whose sum is σ = 2538993600. Its totient is φ = 379671264.

The previous prime is 1140780401. The next prime is 1140780413. The reversal of 1140780402 is 2040870411.

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 (1140780401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19558 + ... + 51614.

It is an arithmetic number, because the mean of its divisors is an integer number (79343550).

Almost surely, 2^1140780402 is an apocalyptic number.

1140780402 is an abundant number, since it is smaller than the sum of its proper divisors (1398213198).

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

1140780402 is a wasteful number, since it uses less digits than its factorization.

1140780402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32727 (or 32721 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 1140780402 is about 33775.4408113351. The cubic root of 1140780402 is about 1044.8822473639.

Subtracting 1140780402 from its reverse (2040870411), we obtain a palindrome (900090009).

It can be divided in two parts, 11407 and 80402, that added together give a square (91809 = 303²).

The spelling of 1140780402 in words is "one billion, one hundred forty million, seven hundred eighty thousand, four hundred two".