2091342 has 16 divisors (see below), whose sum is σ = 4563072. Its totient is φ = 633720.

The previous prime is 2091337. The next prime is 2091343. The reversal of 2091342 is 2431902.

It is a super-2 number, since 2×2091342² = 8747422721928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091343) 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, 15778 + ... + 15909.

It is an arithmetic number, because the mean of its divisors is an integer number (285192).

2^2091342 is an apocalyptic number.

2091342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2091342 is an abundant number, since it is smaller than the sum of its proper divisors (2471730).

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

2091342 is a wasteful number, since it uses less digits than its factorization.

2091342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31703.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2091342 is about 1446.1472954025. The cubic root of 2091342 is about 127.8816859200.

It can be divided in two parts, 209 and 1342, that added together give a palindrome (1551).

The spelling of 2091342 in words is "two million, ninety-one thousand, three hundred forty-two".