1142645505 has 16 divisors (see below), whose sum is σ = 1829454720. Its totient is φ = 609003648.

The previous prime is 1142645489. The next prime is 1142645509. The reversal of 1142645505 is 5055462411.

It is not a de Polignac number, because 1142645505 - 2⁴ = 1142645489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142645509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1540 + ... + 47829.

It is an arithmetic number, because the mean of its divisors is an integer number (114340920).

Almost surely, 2^1142645505 is an apocalyptic number.

1142645505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142645505 is a deficient number, since it is larger than the sum of its proper divisors (686809215).

1142645505 is a wasteful number, since it uses less digits than its factorization.

1142645505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50920.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1142645505 is about 33803.0398780938. The cubic root of 1142645505 is about 1045.4513758637.

The spelling of 1142645505 in words is "one billion, one hundred forty-two million, six hundred forty-five thousand, five hundred five".