1022749842 has 16 divisors (see below), whose sum is σ = 2051573472. Its totient is φ = 339904320.

The previous prime is 1022749813. The next prime is 1022749867. The reversal of 1022749842 is 2489472201.

It is a happy number.

It is a super-2 number, since 2×1022749842² = 2092034478622049928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1022749842.

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, 250884 + ... + 254927.

It is an arithmetic number, because the mean of its divisors is an integer number (128223342).

Almost surely, 2^1022749842 is an apocalyptic number.

1022749842 is an abundant number, since it is smaller than the sum of its proper divisors (1028823630).

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

1022749842 is a wasteful number, since it uses less digits than its factorization.

1022749842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506153.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1022749842 is about 31980.4603156365. The cubic root of 1022749842 is about 1007.5264904873.

The spelling of 1022749842 in words is "one billion, twenty-two million, seven hundred forty-nine thousand, eight hundred forty-two".