1011142397 has 2 divisors, whose sum is σ = 1011142398. Its totient is φ = 1011142396.

The previous prime is 1011142393. The next prime is 1011142481. The reversal of 1011142397 is 7932411101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 767345401 + 243796996 = 27701^2 + 15614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011142397 - 2² = 1011142393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011142393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505571198 + 505571199.

It is an arithmetic number, because the mean of its divisors is an integer number (505571199).

Almost surely, 2^1011142397 is an apocalyptic number.

It is an amenable number.

1011142397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011142397 is an equidigital number, since it uses as much as digits as its factorization.

1011142397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1011142397 is about 31798.4653246033. The cubic root of 1011142397 is about 1003.7004223179.

Adding to 1011142397 its reverse (7932411101), we get a palindrome (8943553498).

The spelling of 1011142397 in words is "one billion, eleven million, one hundred forty-two thousand, three hundred ninety-seven".