742022220 has 24 divisors (see below), whose sum is σ = 2077662384. Its totient is φ = 197872576.

The previous prime is 742022191. The next prime is 742022221. The reversal of 742022220 is 22220247.

It is not an unprimeable number, because it can be changed into a prime (742022221) 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, 6183459 + ... + 6183578.

It is an arithmetic number, because the mean of its divisors is an integer number (86569266).

Almost surely, 2^742022220 is an apocalyptic number.

It is an amenable number.

742022220 is an abundant number, since it is smaller than the sum of its proper divisors (1335640164).

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

742022220 is a wasteful number, since it uses less digits than its factorization.

742022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12367049 (or 12367047 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 742022220 is about 27240.0848016301. The cubic root of 742022220 is about 905.3273420815.

Adding to 742022220 its reverse (22220247), we get a palindrome (764242467).

The spelling of 742022220 in words is "seven hundred forty-two million, twenty-two thousand, two hundred twenty".