1042279220 has 18 divisors (see below), whose sum is σ = 2189089602. Its totient is φ = 416853936.

The previous prime is 1042279211. The next prime is 1042279243. The reversal of 1042279220 is 229722401.

It can be written as a sum of positive squares in only one way, i.e., 833823376 + 208455844 = 28876^2 + 14438^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140771 + ... + 147989.

It is an arithmetic number, because the mean of its divisors is an integer number (121616089).

Almost surely, 2^1042279220 is an apocalyptic number.

1042279220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042279220 is an abundant number, since it is smaller than the sum of its proper divisors (1146810382).

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

1042279220 is an frugal number, since it uses more digits than its factorization.

1042279220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14447 (or 7226 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1042279220 is about 32284.3494591420. The cubic root of 1042279220 is about 1013.8989962249.

The spelling of 1042279220 in words is "one billion, forty-two million, two hundred seventy-nine thousand, two hundred twenty".