4140421515 has 40 divisors (see below), whose sum is σ = 7427043888. Its totient is φ = 2206751040.

The previous prime is 4140421511. The next prime is 4140421547. The reversal of 4140421515 is 5151240414.

4140421515 is a `hidden beast` number, since 4 + 140 + 4 + 2 + 1 + 515 = 666.

It is not a de Polignac number, because 4140421515 - 2² = 4140421511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4140421511) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 897204 + ... + 901806.

Almost surely, 2^4140421515 is an apocalyptic number.

4140421515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4140421515 is a deficient number, since it is larger than the sum of its proper divisors (3286622373).

4140421515 is a wasteful number, since it uses less digits than its factorization.

4140421515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841 (or 6832 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 4140421515 is about 64346.1072249130. The cubic root of 4140421515 is about 1605.7632669778.

Adding to 4140421515 its reverse (5151240414), we get a palindrome (9291661929).

The spelling of 4140421515 in words is "four billion, one hundred forty million, four hundred twenty-one thousand, five hundred fifteen".