220920542 has 16 divisors (see below), whose sum is σ = 351196560. Its totient is φ = 103867008.

The previous prime is 220920533. The next prime is 220920569. The reversal of 220920542 is 245029022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46313 + ... + 50859.

It is an arithmetic number, because the mean of its divisors is an integer number (21949785).

Almost surely, 2^220920542 is an apocalyptic number.

220920542 is a deficient number, since it is larger than the sum of its proper divisors (130276018).

220920542 is a wasteful number, since it uses less digits than its factorization.

220920542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5995.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 220920542 is about 14863.3960453188. The cubic root of 220920542 is about 604.5218926070.

Adding to 220920542 its reverse (245029022), we get a palindrome (465949564).

The spelling of 220920542 in words is "two hundred twenty million, nine hundred twenty thousand, five hundred forty-two".