1142738 has 4 divisors (see below), whose sum is σ = 1714110. Its totient is φ = 571368.

The previous prime is 1142737. The next prime is 1142759. The reversal of 1142738 is 8372411.

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

It can be written as a sum of positive squares in only one way, i.e., 1129969 + 12769 = 1063^2 + 113^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1142737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285683 + ... + 285686.

2^1142738 is an apocalyptic number.

1142738 is a deficient number, since it is larger than the sum of its proper divisors (571372).

1142738 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 1142738 = (2131478)₉.

1142738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571371.

The product of its digits is 1344, while the sum is 26.

The square root of 1142738 is about 1068.9892422284. The cubic root of 1142738 is about 104.5479584209.

The spelling of 1142738 in words is "one million, one hundred forty-two thousand, seven hundred thirty-eight".