42522642 has 54 divisors (see below), whose sum is σ = 97253247. Its totient is φ = 13427232.

The previous prime is 42522611. The next prime is 42522677. The reversal of 42522642 is 24622524.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 31573161 + 10949481 = 5619^2 + 3309^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4611.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 802288 + ... + 802340.

Almost surely, 2^42522642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42522642

42522642 is an abundant number, since it is smaller than the sum of its proper divisors (54730605).

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

42522642 is a wasteful number, since it uses less digits than its factorization.

42522642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 87 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 42522642 is about 6520.9387361023. The cubic root of 42522642 is about 349.0385641137.

The spelling of 42522642 in words is "forty-two million, five hundred twenty-two thousand, six hundred forty-two".