22147042 has 8 divisors (see below), whose sum is σ = 33305436. Its totient is φ = 11045232.

The previous prime is 22147031. The next prime is 22147043. The reversal of 22147042 is 24074122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17648401 + 4498641 = 4201^2 + 2121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22147043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13153 + ... + 14740.

Almost surely, 2^22147042 is an apocalyptic number.

22147042 is a deficient number, since it is larger than the sum of its proper divisors (11158394).

22147042 is a wasteful number, since it uses less digits than its factorization.

22147042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28292.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 22147042 is about 4706.0643854499. The cubic root of 22147042 is about 280.8268162824.

The spelling of 22147042 in words is "twenty-two million, one hundred forty-seven thousand, forty-two".