1154421045 has 32 divisors (see below), whose sum is σ = 2059779840. Its totient is φ = 613448640.

The previous prime is 1154421029. The next prime is 1154421049. The reversal of 1154421045 is 5401244511.

1154421045 is a `hidden beast` number, since 11 + 544 + 2 + 104 + 5 = 666.

It is not a de Polignac number, because 1154421045 - 2⁴ = 1154421029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154421049) 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, 21960 + ... + 52830.

It is an arithmetic number, because the mean of its divisors is an integer number (64368120).

Almost surely, 2^1154421045 is an apocalyptic number.

1154421045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1154421045 is a deficient number, since it is larger than the sum of its proper divisors (905358795).

1154421045 is a wasteful number, since it uses less digits than its factorization.

1154421045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31162 (or 31156 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1154421045 is about 33976.7721392130. The cubic root of 1154421045 is about 1049.0304110621.

Adding to 1154421045 its reverse (5401244511), we get a palindrome (6555665556).

The spelling of 1154421045 in words is "one billion, one hundred fifty-four million, four hundred twenty-one thousand, forty-five".