1074021520 has 160 divisors (see below), whose sum is σ = 2953810944. Its totient is φ = 358041600.

The previous prime is 1074021517. The next prime is 1074021523. The reversal of 1074021520 is 251204701.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1074021517) and next prime (1074021523).

It is a super-2 number, since 2×1074021520² = 2307044450846220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1074021491 and 1074021500.

It is not an unprimeable number, because it can be changed into a prime (1074021523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2550910 + ... + 2551330.

Almost surely, 2^1074021520 is an apocalyptic number.

1074021520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1074021520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1476905472).

1074021520 is an abundant number, since it is smaller than the sum of its proper divisors (1879789424).

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

1074021520 is a wasteful number, since it uses less digits than its factorization.

1074021520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 1074021520 is about 32772.2675443736. The cubic root of 1074021520 is about 1024.0889052448.

The spelling of 1074021520 in words is "one billion, seventy-four million, twenty-one thousand, five hundred twenty".