1443657142 has 16 divisors (see below), whose sum is σ = 2211027840. Its totient is φ = 706705792.

The previous prime is 1443657101. The next prime is 1443657143. The reversal of 1443657142 is 2417563441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443657143) 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, 36558 + ... + 64990.

It is an arithmetic number, because the mean of its divisors is an integer number (138189240).

Almost surely, 2^1443657142 is an apocalyptic number.

1443657142 is a deficient number, since it is larger than the sum of its proper divisors (767370698).

1443657142 is a wasteful number, since it uses less digits than its factorization.

1443657142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28967.

The product of its digits is 80640, while the sum is 37.

The square root of 1443657142 is about 37995.4884427086. The cubic root of 1443657142 is about 1130.1983993928.

The spelling of 1443657142 in words is "one billion, four hundred forty-three million, six hundred fifty-seven thousand, one hundred forty-two".