1142431515 has 12 divisors (see below), whose sum is σ = 1980214704. Its totient is φ = 609296784.

The previous prime is 1142431471. The next prime is 1142431541. The reversal of 1142431515 is 5151342411.

1142431515 is a `hidden beast` number, since 1 + 142 + 4 + 3 + 1 + 515 = 666.

It is not a de Polignac number, because 1142431515 - 2¹¹ = 1142429467 is a prime.

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, 12693639 + ... + 12693728.

It is an arithmetic number, because the mean of its divisors is an integer number (165017892).

Almost surely, 2^1142431515 is an apocalyptic number.

1142431515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1142431515 is a deficient number, since it is larger than the sum of its proper divisors (837783189).

1142431515 is a wasteful number, since it uses less digits than its factorization.

1142431515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25387378 (or 25387375 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1142431515 is about 33799.8744820155. The cubic root of 1142431515 is about 1045.3861091629.

Adding to 1142431515 its reverse (5151342411), we get a palindrome (6293773926).

The spelling of 1142431515 in words is "one billion, one hundred forty-two million, four hundred thirty-one thousand, five hundred fifteen".