1142261015 has 32 divisors (see below), whose sum is σ = 1588654080. Its totient is φ = 772272000.

The previous prime is 1142261009. The next prime is 1142261017. The reversal of 1142261015 is 5101622411.

It is a de Polignac number, because none of the positive numbers 2^k-1142261015 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142261017) 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, 1098866 + ... + 1099904.

It is an arithmetic number, because the mean of its divisors is an integer number (49645440).

Almost surely, 2^1142261015 is an apocalyptic number.

1142261015 is a deficient number, since it is larger than the sum of its proper divisors (446393065).

1142261015 is a wasteful number, since it uses less digits than its factorization.

1142261015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1142261015 is about 33797.3521891878. The cubic root of 1142261015 is about 1045.3341010273.

Adding to 1142261015 its reverse (5101622411), we get a palindrome (6243883426).

The spelling of 1142261015 in words is "one billion, one hundred forty-two million, two hundred sixty-one thousand, fifteen".