1047021280 has 48 divisors (see below), whose sum is σ = 2553393024. Its totient is φ = 405296640.

The previous prime is 1047021259. The next prime is 1047021281. The reversal of 1047021280 is 821207401.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047021281) 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, 100587 + ... + 110506.

It is an arithmetic number, because the mean of its divisors is an integer number (53195688).

Almost surely, 2^1047021280 is an apocalyptic number.

1047021280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1047021280 is an abundant number, since it is smaller than the sum of its proper divisors (1506371744).

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

1047021280 is a wasteful number, since it uses less digits than its factorization.

1047021280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211139 (or 211131 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 1047021280 is about 32357.7082006745. The cubic root of 1047021280 is about 1015.4343163023.

Adding to 1047021280 its reverse (821207401), we get a palindrome (1868228681).

The spelling of 1047021280 in words is "one billion, forty-seven million, twenty-one thousand, two hundred eighty".