43140022 has 4 divisors (see below), whose sum is σ = 64710036. Its totient is φ = 21570010.

The previous prime is 43140011. The next prime is 43140037. The reversal of 43140022 is 22004134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22004134 = 2 ⋅11002067.

It is a super-2 number, since 2×43140022² = 3722122996320968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43139978 and 43140005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10785004 + ... + 10785007.

It is an arithmetic number, because the mean of its divisors is an integer number (16177509).

Almost surely, 2^43140022 is an apocalyptic number.

43140022 is a deficient number, since it is larger than the sum of its proper divisors (21570014).

43140022 is a wasteful number, since it uses less digits than its factorization.

43140022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21570013.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 43140022 is about 6568.1064242291. The cubic root of 43140022 is about 350.7196675099.

Adding to 43140022 its reverse (22004134), we get a palindrome (65144156).

The spelling of 43140022 in words is "forty-three million, one hundred forty thousand, twenty-two".