1121450004 has 18 divisors (see below), whose sum is σ = 2834776490. Its totient is φ = 373816656.

The previous prime is 1121450003. The next prime is 1121450021. The reversal of 1121450004 is 4000541211.

It can be written as a sum of positive squares in only one way, i.e., 1094948100 + 26501904 = 33090^2 + 5148^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1121450004² = 2515300222943200032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121450003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15575659 + ... + 15575730.

Almost surely, 2^1121450004 is an apocalyptic number.

It is an amenable number.

1121450004 is an abundant number, since it is smaller than the sum of its proper divisors (1713326486).

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

1121450004 is a wasteful number, since it uses less digits than its factorization.

1121450004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31151399 (or 31151394 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1121450004 is about 33488.0576325352. The cubic root of 1121450004 is about 1038.9467900347.

Adding to 1121450004 its reverse (4000541211), we get a palindrome (5121991215).

The spelling of 1121450004 in words is "one billion, one hundred twenty-one million, four hundred fifty thousand, four".