422157494 has 16 divisors (see below), whose sum is σ = 709474896. Its totient is φ = 186703200.

The previous prime is 422157487. The next prime is 422157497. The reversal of 422157494 is 494751224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422157497) 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, 258497 + ... + 260124.

It is an arithmetic number, because the mean of its divisors is an integer number (44342181).

Almost surely, 2^422157494 is an apocalyptic number.

422157494 is a deficient number, since it is larger than the sum of its proper divisors (287317402).

422157494 is a wasteful number, since it uses less digits than its factorization.

422157494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518671.

The product of its digits is 80640, while the sum is 38.

The square root of 422157494 is about 20546.4715705641. The cubic root of 422157494 is about 750.1673665003.

The spelling of 422157494 in words is "four hundred twenty-two million, one hundred fifty-seven thousand, four hundred ninety-four".