4140123154 has 16 divisors (see below), whose sum is σ = 6329764728. Its totient is φ = 2030579712.

The previous prime is 4140123151. The next prime is 4140123157. The reversal of 4140123154 is 4513210414.

It is an interprime number because it is at equal distance from previous prime (4140123151) and next prime (4140123157).

It can be written as a sum of positive squares in 4 ways, for example, as 2108187225 + 2031935929 = 45915^2 + 45077^2 .

It is not an unprimeable number, because it can be changed into a prime (4140123151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72507 + ... + 116350.

Almost surely, 2^4140123154 is an apocalyptic number.

4140123154 is a deficient number, since it is larger than the sum of its proper divisors (2189641574).

4140123154 is a wasteful number, since it uses less digits than its factorization.

4140123154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189069.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4140123154 is about 64343.7887756075. The cubic root of 4140123154 is about 1605.7246953299.

Adding to 4140123154 its reverse (4513210414), we get a palindrome (8653333568).

The spelling of 4140123154 in words is "four billion, one hundred forty million, one hundred twenty-three thousand, one hundred fifty-four".