1142691993 has 6 divisors (see below), whose sum is σ = 1650555114. Its totient is φ = 761794656.

The previous prime is 1142691973. The next prime is 1142692007. The reversal of 1142691993 is 3991962411.

It can be written as a sum of positive squares in only one way, i.e., 736145424 + 406546569 = 27132^2 + 20163^2 .

It is not a de Polignac number, because 1142691993 - 2²¹ = 1140594841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142691973) 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 5 ways as a sum of consecutive naturals, for example, 63482880 + ... + 63482897.

It is an arithmetic number, because the mean of its divisors is an integer number (275092519).

Almost surely, 2^1142691993 is an apocalyptic number.

It is an amenable number.

1142691993 is a deficient number, since it is larger than the sum of its proper divisors (507863121).

1142691993 is a wasteful number, since it uses less digits than its factorization.

1142691993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126965783 (or 126965780 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 1142691993 is about 33803.7275015641. The cubic root of 1142691993 is about 1045.4655535721.

The spelling of 1142691993 in words is "one billion, one hundred forty-two million, six hundred ninety-one thousand, nine hundred ninety-three".