4128742 has 4 divisors (see below), whose sum is σ = 6193116. Its totient is φ = 2064370.

The previous prime is 4128713. The next prime is 4128743. The reversal of 4128742 is 2478214.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4128742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032184 + ... + 1032187.

It is an arithmetic number, because the mean of its divisors is an integer number (1548279).

Almost surely, 2^4128742 is an apocalyptic number.

4128742 is a deficient number, since it is larger than the sum of its proper divisors (2064374).

4128742 is a wasteful number, since it uses less digits than its factorization.

4128742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064373.

The product of its digits is 3584, while the sum is 28.

The square root of 4128742 is about 2031.9306090514. The cubic root of 4128742 is about 160.4251971701.

The spelling of 4128742 in words is "four million, one hundred twenty-eight thousand, seven hundred forty-two".