43072142 has 4 divisors (see below), whose sum is σ = 64608216. Its totient is φ = 21536070.

The previous prime is 43072109. The next prime is 43072151. The reversal of 43072142 is 24127034.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10768034 + ... + 10768037.

It is an arithmetic number, because the mean of its divisors is an integer number (16152054).

Almost surely, 2^43072142 is an apocalyptic number.

43072142 is a deficient number, since it is larger than the sum of its proper divisors (21536074).

43072142 is a wasteful number, since it uses less digits than its factorization.

43072142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21536073.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 43072142 is about 6562.9369949741. The cubic root of 43072142 is about 350.5356207138.

Adding to 43072142 its reverse (24127034), we get a palindrome (67199176).

The spelling of 43072142 in words is "forty-three million, seventy-two thousand, one hundred forty-two".