1152121451 has 8 divisors (see below), whose sum is σ = 1294692000. Its totient is φ = 1017257472.

The previous prime is 1152121447. The next prime is 1152121459. The reversal of 1152121451 is 1541212511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1152121451 - 2² = 1152121447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152121459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1926326 + ... + 1926923.

It is an arithmetic number, because the mean of its divisors is an integer number (161836500).

Almost surely, 2^1152121451 is an apocalyptic number.

1152121451 is a deficient number, since it is larger than the sum of its proper divisors (142570549).

1152121451 is a wasteful number, since it uses less digits than its factorization.

1152121451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853285.

The product of its digits is 400, while the sum is 23.

The square root of 1152121451 is about 33942.9145920028. The cubic root of 1152121451 is about 1048.3333957019. Note that the first 4 decimals are identical.

Adding to 1152121451 its reverse (1541212511), we get a palindrome (2693333962).

The spelling of 1152121451 in words is "one billion, one hundred fifty-two million, one hundred twenty-one thousand, four hundred fifty-one".