1144157426 has 8 divisors (see below), whose sum is σ = 1817191260. Its totient is φ = 538427008.

The previous prime is 1144157383. The next prime is 1144157429. The reversal of 1144157426 is 6247514411.

It can be written as a sum of positive squares in 2 ways, for example, as 1099254025 + 44903401 = 33155^2 + 6701^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1144157429) 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, 16825811 + ... + 16825878.

Almost surely, 2^1144157426 is an apocalyptic number.

1144157426 is a deficient number, since it is larger than the sum of its proper divisors (673033834).

1144157426 is a wasteful number, since it uses less digits than its factorization.

1144157426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33651708.

The product of its digits is 26880, while the sum is 35.

The square root of 1144157426 is about 33825.3961691508. The cubic root of 1144157426 is about 1045.9122779953.

The spelling of 1144157426 in words is "one billion, one hundred forty-four million, one hundred fifty-seven thousand, four hundred twenty-six".