1121445402 has 32 divisors (see below), whose sum is σ = 2796332544. Its totient is φ = 291284400.

The previous prime is 1121445401. The next prime is 1121445439. The reversal of 1121445402 is 2045441211.

It is not an unprimeable number, because it can be changed into a prime (1121445401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1213224 + ... + 1214147.

It is an arithmetic number, because the mean of its divisors is an integer number (87385392).

Almost surely, 2^1121445402 is an apocalyptic number.

1121445402 is an abundant number, since it is smaller than the sum of its proper divisors (1674887142).

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

1121445402 is a wasteful number, since it uses less digits than its factorization.

1121445402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427394.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1121445402 is about 33487.9889214028. The cubic root of 1121445402 is about 1038.9453688865.

Adding to 1121445402 its reverse (2045441211), we get a palindrome (3166886613).

It can be divided in two parts, 11214 and 45402, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 1121445402 in words is "one billion, one hundred twenty-one million, four hundred forty-five thousand, four hundred two".