1154423240 has 32 divisors (see below), whose sum is σ = 2598583680. Its totient is φ = 461568192.

The previous prime is 1154423227. The next prime is 1154423311. The reversal of 1154423240 is 423244511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116147 + ... + 125693.

It is an arithmetic number, because the mean of its divisors is an integer number (81205740).

Almost surely, 2^1154423240 is an apocalyptic number.

1154423240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154423240 is an abundant number, since it is smaller than the sum of its proper divisors (1444160440).

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

1154423240 is a wasteful number, since it uses less digits than its factorization.

1154423240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12581 (or 12577 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1154423240 is about 33976.8044406769. The cubic root of 1154423240 is about 1049.0310759323.

Adding to 1154423240 its reverse (423244511), we get a palindrome (1577667751).

The spelling of 1154423240 in words is "one billion, one hundred fifty-four million, four hundred twenty-three thousand, two hundred forty".