420222542 has 16 divisors (see below), whose sum is σ = 650083632. Its totient is φ = 203575680.

The previous prime is 420222503. The next prime is 420222547. The reversal of 420222542 is 245222024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420222547) 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, 6053 + ... + 29615.

It is an arithmetic number, because the mean of its divisors is an integer number (40630227).

Almost surely, 2^420222542 is an apocalyptic number.

420222542 is a deficient number, since it is larger than the sum of its proper divisors (229861090).

420222542 is a wasteful number, since it uses less digits than its factorization.

420222542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23843.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 420222542 is about 20499.3302817434. The cubic root of 420222542 is about 749.0194843069.

Adding to 420222542 its reverse (245222024), we get a palindrome (665444566).

The spelling of 420222542 in words is "four hundred twenty million, two hundred twenty-two thousand, five hundred forty-two".