1140021390 has 32 divisors (see below), whose sum is σ = 2740432896. Its totient is φ = 303518880.

The previous prime is 1140021383. The next prime is 1140021397. The reversal of 1140021390 is 931200411.

It is an interprime number because it is at equal distance from previous prime (1140021383) and next prime (1140021397).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140021397) 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, 11182 + ... + 49041.

It is an arithmetic number, because the mean of its divisors is an integer number (85638528).

Almost surely, 2^1140021390 is an apocalyptic number.

1140021390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1140021390 is an abundant number, since it is smaller than the sum of its proper divisors (1600411506).

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

1140021390 is a wasteful number, since it uses less digits than its factorization.

1140021390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60864.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1140021390 is about 33764.2027893448. The cubic root of 1140021390 is about 1044.6504603878.

It can be divided in two parts, 1140021 and 390, that added together give a palindrome (1140411).

The spelling of 1140021390 in words is "one billion, one hundred forty million, twenty-one thousand, three hundred ninety".