2140356 has 24 divisors (see below), whose sum is σ = 5027904. Its totient is φ = 708640.

The previous prime is 2140349. The next prime is 2140363. The reversal of 2140356 is 6530412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2140349) and next prime (2140363).

It is a super-2 number, since 2×2140356² = 9162247613472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (209496).

2^2140356 is an apocalyptic number.

It is an amenable number.

2140356 is an abundant number, since it is smaller than the sum of its proper divisors (2887548).

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

2140356 is a wasteful number, since it uses less digits than its factorization.

2140356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2140356 is about 1462.9955570678. The cubic root of 2140356 is about 128.8730196915.

Adding to 2140356 its reverse (6530412), we get a palindrome (8670768).

The spelling of 2140356 in words is "two million, one hundred forty thousand, three hundred fifty-six".