1142612661 has 16 divisors (see below), whose sum is σ = 1544422464. Its totient is φ = 751334784.

The previous prime is 1142612657. The next prime is 1142612677. The reversal of 1142612661 is 1662162411.

It is not a de Polignac number, because 1142612661 - 2² = 1142612657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142612461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67155 + ... + 82431.

It is an arithmetic number, because the mean of its divisors is an integer number (96526404).

Almost surely, 2^1142612661 is an apocalyptic number.

It is an amenable number.

1142612661 is a deficient number, since it is larger than the sum of its proper divisors (401809803).

1142612661 is a wasteful number, since it uses less digits than its factorization.

1142612661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15620.

The product of its digits is 3456, while the sum is 30.

The square root of 1142612661 is about 33802.5540603073. The cubic root of 1142612661 is about 1045.4413590113.

The spelling of 1142612661 in words is "one billion, one hundred forty-two million, six hundred twelve thousand, six hundred sixty-one".