4000124541 has 32 divisors (see below), whose sum is σ = 6347520000. Its totient is φ = 2192299200.

The previous prime is 4000124503. The next prime is 4000124543. The reversal of 4000124541 is 1454210004.

It is a happy number.

It is not a de Polignac number, because 4000124541 - 2¹⁷ = 3999993469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000124543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70210 + ... + 113708.

It is an arithmetic number, because the mean of its divisors is an integer number (198360000).

Almost surely, 2^4000124541 is an apocalyptic number.

It is an amenable number.

4000124541 is a deficient number, since it is larger than the sum of its proper divisors (2347395459).

4000124541 is a wasteful number, since it uses less digits than its factorization.

4000124541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43689.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 4000124541 is about 63246.5377787591. The cubic root of 4000124541 is about 1587.4175265068.

Adding to 4000124541 its reverse (1454210004), we get a palindrome (5454334545).

The spelling of 4000124541 in words is "four billion, one hundred twenty-four thousand, five hundred forty-one".