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1142399 = 2334903
BaseRepresentation
bin100010110111001111111
32011001002002
410112321333
5243024044
640252515
712465416
oct4267177
92131062
101142399
11710335
1247113b
1330cc9b
1421a47d
1517874e
hex116e7f

1142399 has 4 divisors (see below), whose sum is σ = 1147536. Its totient is φ = 1137264.

The previous prime is 1142389. The next prime is 1142423. The reversal of 1142399 is 9932411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1142399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2219 + ... + 2684.

It is an arithmetic number, because the mean of its divisors is an integer number (286884).

21142399 is an apocalyptic number.

1142399 is a deficient number, since it is larger than the sum of its proper divisors (5137).

1142399 is an equidigital number, since it uses as much as digits as its factorization.

1142399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136.

The product of its digits is 1944, while the sum is 29.

The square root of 1142399 is about 1068.8306694701. The cubic root of 1142399 is about 104.5376191412.

The spelling of 1142399 in words is "one million, one hundred forty-two thousand, three hundred ninety-nine".

Divisors: 1 233 4903 1142399