1042211988 has 48 divisors (see below), whose sum is σ = 2705055360. Its totient is φ = 347015232.

The previous prime is 1042211977. The next prime is 1042212007. The reversal of 1042211988 is 8891122401.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101256 + ... + 111072.

It is an arithmetic number, because the mean of its divisors is an integer number (56355320).

Almost surely, 2^1042211988 is an apocalyptic number.

1042211988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1042211988 is an abundant number, since it is smaller than the sum of its proper divisors (1662843372).

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

1042211988 is a wasteful number, since it uses less digits than its factorization.

1042211988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10813 (or 10805 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1042211988 is about 32283.3081947932. The cubic root of 1042211988 is about 1013.8771953095.

The spelling of 1042211988 in words is "one billion, forty-two million, two hundred eleven thousand, nine hundred eighty-eight".