4012538 has 8 divisors (see below), whose sum is σ = 6045780. Its totient is φ = 1997280.

The previous prime is 4012537. The next prime is 4012549. The reversal of 4012538 is 8352104.

It can be written as a sum of positive squares in 2 ways, for example, as 4012009 + 529 = 2003^2 + 23^2 .

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

It is a super-2 number, since 2×4012538² = 32200922402888, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4012537) 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, 3923 + ... + 4838.

Almost surely, 2^4012538 is an apocalyptic number.

4012538 is a deficient number, since it is larger than the sum of its proper divisors (2033242).

4012538 is a wasteful number, since it uses less digits than its factorization.

4012538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8992.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4012538 is about 2003.1320475695. The cubic root of 4012538 is about 158.9057891583.

The spelling of 4012538 in words is "four million, twelve thousand, five hundred thirty-eight".