1145122451 has 8 divisors (see below), whose sum is σ = 1260280944. Its totient is φ = 1031806720.

The previous prime is 1145122441. The next prime is 1145122463. The reversal of 1145122451 is 1542215411.

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 1145122451 - 2⁶ = 1145122387 is a prime.

It is a super-2 number, since 2×1145122451² = 2622610855568494802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145122451.

It is not an unprimeable number, because it can be changed into a prime (1145122441) 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, 459386 + ... + 461871.

It is an arithmetic number, because the mean of its divisors is an integer number (157535118).

Almost surely, 2^1145122451 is an apocalyptic number.

1145122451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1145122451 is a deficient number, since it is larger than the sum of its proper divisors (115158493).

1145122451 is a wasteful number, since it uses less digits than its factorization.

1145122451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921381.

The product of its digits is 1600, while the sum is 26.

The square root of 1145122451 is about 33839.6579622194. The cubic root of 1145122451 is about 1046.2062491560.

Adding to 1145122451 its reverse (1542215411), we get a palindrome (2687337862).

The spelling of 1145122451 in words is "one billion, one hundred forty-five million, one hundred twenty-two thousand, four hundred fifty-one".