1154562642 has 24 divisors (see below), whose sum is σ = 2559729744. Its totient is φ = 375903864.

The previous prime is 1154562623. The next prime is 1154562659. The reversal of 1154562642 is 2462654511.

1154562642 is a `hidden beast` number, since 1 + 1 + 5 + 4 + 5 + 6 + 2 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1154562597 and 1154562606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 745068 + ... + 746615.

It is an arithmetic number, because the mean of its divisors is an integer number (106655406).

Almost surely, 2^1154562642 is an apocalyptic number.

1154562642 is an abundant number, since it is smaller than the sum of its proper divisors (1405167102).

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

1154562642 is a wasteful number, since it uses less digits than its factorization.

1154562642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491734 (or 1491731 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1154562642 is about 33978.8558076931. The cubic root of 1154562642 is about 1049.0732993674.

The spelling of 1154562642 in words is "one billion, one hundred fifty-four million, five hundred sixty-two thousand, six hundred forty-two".