4040121545 has 8 divisors (see below), whose sum is σ = 4960893696. Its totient is φ = 3156932016.

The previous prime is 4040121539. The next prime is 4040121559. The reversal of 4040121545 is 5451210404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4040121545 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9395417 + ... + 9395846.

It is an arithmetic number, because the mean of its divisors is an integer number (620111712).

Almost surely, 2^4040121545 is an apocalyptic number.

It is an amenable number.

4040121545 is a deficient number, since it is larger than the sum of its proper divisors (920772151).

4040121545 is a wasteful number, since it uses less digits than its factorization.

4040121545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18791311.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 4040121545 is about 63561.9504499351. The cubic root of 4040121545 is about 1592.6908202822.

Adding to 4040121545 its reverse (5451210404), we get a palindrome (9491331949).

The spelling of 4040121545 in words is "four billion, forty million, one hundred twenty-one thousand, five hundred forty-five".