1042221995 has 4 divisors (see below), whose sum is σ = 1250666400. Its totient is φ = 833777592.

The previous prime is 1042221979. The next prime is 1042221997. The reversal of 1042221995 is 5991222401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1042221995 - 2⁴ = 1042221979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1042221997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104222195 + ... + 104222204.

It is an arithmetic number, because the mean of its divisors is an integer number (312666600).

Almost surely, 2^1042221995 is an apocalyptic number.

1042221995 is a deficient number, since it is larger than the sum of its proper divisors (208444405).

1042221995 is an equidigital number, since it uses as much as digits as its factorization.

1042221995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208444404.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1042221995 is about 32283.4631816353. The cubic root of 1042221995 is about 1013.8804402785.

The spelling of 1042221995 in words is "one billion, forty-two million, two hundred twenty-one thousand, nine hundred ninety-five".