1142997 has 8 divisors (see below), whose sum is σ = 1535520. Its totient is φ = 756240.

The previous prime is 1142971. The next prime is 1143013. The reversal of 1142997 is 7992411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1142997 - 2¹¹ = 1140949 is a prime.

1142997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (191940).

2^1142997 is an apocalyptic number.

It is an amenable number.

1142997 is a deficient number, since it is larger than the sum of its proper divisors (392523).

1142997 is a wasteful number, since it uses less digits than its factorization.

1142997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883.

The product of its digits is 4536, while the sum is 33.

The square root of 1142997 is about 1069.1103778376. The cubic root of 1142997 is about 104.5558563747. Note that the first 3 decimals are identical.

The spelling of 1142997 in words is "one million, one hundred forty-two thousand, nine hundred ninety-seven".