4072142 has 4 divisors (see below), whose sum is σ = 6108216. Its totient is φ = 2036070.

The previous prime is 4072139. The next prime is 4072147. The reversal of 4072142 is 2412704.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4072147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1018034 + ... + 1018037.

It is an arithmetic number, because the mean of its divisors is an integer number (1527054).

Almost surely, 2^4072142 is an apocalyptic number.

4072142 is a deficient number, since it is larger than the sum of its proper divisors (2036074).

4072142 is a wasteful number, since it uses less digits than its factorization.

4072142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036073.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 4072142 is about 2017.9549053435. The cubic root of 4072142 is about 159.6887438485.

Adding to 4072142 its reverse (2412704), we get a palindrome (6484846).

The spelling of 4072142 in words is "four million, seventy-two thousand, one hundred forty-two".