1140400523 has 8 divisors (see below), whose sum is σ = 1167948288. Its totient is φ = 1113076224.

The previous prime is 1140400517. The next prime is 1140400529. The reversal of 1140400523 is 3250040411.

It is an interprime number because it is at equal distance from previous prime (1140400517) and next prime (1140400529).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1140400523 - 2⁴ = 1140400507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1140400495 and 1140400504.

It is not an unprimeable number, because it can be changed into a prime (1140400529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45515 + ... + 65972.

It is an arithmetic number, because the mean of its divisors is an integer number (145993536).

Almost surely, 2^1140400523 is an apocalyptic number.

1140400523 is a deficient number, since it is larger than the sum of its proper divisors (27547765).

1140400523 is a wasteful number, since it uses less digits than its factorization.

1140400523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111733.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1140400523 is about 33769.8167451350. The cubic root of 1140400523 is about 1044.7662528249.

Adding to 1140400523 its reverse (3250040411), we get a palindrome (4390440934).

The spelling of 1140400523 in words is "one billion, one hundred forty million, four hundred thousand, five hundred twenty-three".