1155421454 has 16 divisors (see below), whose sum is σ = 1892758320. Its totient is φ = 524616960.

The previous prime is 1155421453. The next prime is 1155421469. The reversal of 1155421454 is 4541245511.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155421454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155421453) 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, 7829 + ... + 48704.

It is an arithmetic number, because the mean of its divisors is an integer number (118297395).

Almost surely, 2^1155421454 is an apocalyptic number.

1155421454 is a deficient number, since it is larger than the sum of its proper divisors (737336866).

1155421454 is a wasteful number, since it uses less digits than its factorization.

1155421454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57475.

The product of its digits is 16000, while the sum is 32.

The square root of 1155421454 is about 33991.4909058135. The cubic root of 1155421454 is about 1049.3333497703. Note that the first 4 decimals are identical.

Adding to 1155421454 its reverse (4541245511), we get a palindrome (5696666965).

The spelling of 1155421454 in words is "one billion, one hundred fifty-five million, four hundred twenty-one thousand, four hundred fifty-four".