1140020535 has 16 divisors (see below), whose sum is σ = 1824454656. Its totient is φ = 607870368.

The previous prime is 1140020509. The next prime is 1140020543. The reversal of 1140020535 is 5350200411.

It is not a de Polignac number, because 1140020535 - 2⁶ = 1140020471 is a prime.

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, 110362 + ... + 120248.

It is an arithmetic number, because the mean of its divisors is an integer number (114028416).

Almost surely, 2^1140020535 is an apocalyptic number.

1140020535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1140020535 is a deficient number, since it is larger than the sum of its proper divisors (684434121).

1140020535 is an equidigital number, since it uses as much as digits as its factorization.

1140020535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17582.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1140020535 is about 33764.1901280040. The cubic root of 1140020535 is about 1044.6501992300.

Adding to 1140020535 its reverse (5350200411), we get a palindrome (6490220946).

The spelling of 1140020535 in words is "one billion, one hundred forty million, twenty thousand, five hundred thirty-five".