1047120440 has 32 divisors (see below), whose sum is σ = 2494612080. Its totient is φ = 394209792.

The previous prime is 1047120427. The next prime is 1047120463. The reversal of 1047120440 is 440217401.

It is a happy number.

It is a super-2 number, since 2×1047120440² = 2192922431731587200, which contains 22 as substring.

It is a congruent number.

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, 769262 + ... + 770621.

Almost surely, 2^1047120440 is an apocalyptic number.

1047120440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1047120440 is an abundant number, since it is smaller than the sum of its proper divisors (1447491640).

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

1047120440 is a wasteful number, since it uses less digits than its factorization.

1047120440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539911 (or 1539907 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 1047120440 is about 32359.2404113570. The cubic root of 1047120440 is about 1015.4663714574.

Adding to 1047120440 its reverse (440217401), we get a palindrome (1487337841).

The spelling of 1047120440 in words is "one billion, forty-seven million, one hundred twenty thousand, four hundred forty".