1121451402 has 64 divisors (see below), whose sum is σ = 2462515200. Its totient is φ = 339111360.

The previous prime is 1121451371. The next prime is 1121451403. The reversal of 1121451402 is 2041541211.

It is not an unprimeable number, because it can be changed into a prime (1121451403) 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, 418527 + ... + 421197.

It is an arithmetic number, because the mean of its divisors is an integer number (38476800).

Almost surely, 2^1121451402 is an apocalyptic number.

1121451402 is an abundant number, since it is smaller than the sum of its proper divisors (1341063798).

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

1121451402 is a wasteful number, since it uses less digits than its factorization.

1121451402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1121451402 is about 33488.0785056414. The cubic root of 1121451402 is about 1038.9472217516.

Adding to 1121451402 its reverse (2041541211), we get a palindrome (3162992613).

The spelling of 1121451402 in words is "one billion, one hundred twenty-one million, four hundred fifty-one thousand, four hundred two".