4150400021 has 4 divisors (see below), whose sum is σ = 4150734252. Its totient is φ = 4150065792.

The previous prime is 4150399997. The next prime is 4150400053. The reversal of 4150400021 is 1200040514.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 945255025 + 3205144996 = 30745^2 + 56614^2 .

It is a cyclic number.

It is not a de Polignac number, because 4150400021 - 2¹⁰ = 4150398997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4150400081) 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, 147740 + ... + 173573.

It is an arithmetic number, because the mean of its divisors is an integer number (1037683563).

Almost surely, 2^4150400021 is an apocalyptic number.

It is an amenable number.

4150400021 is a deficient number, since it is larger than the sum of its proper divisors (334231).

4150400021 is a wasteful number, since it uses less digits than its factorization.

4150400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334230.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 4150400021 is about 64423.5983239061. The cubic root of 4150400021 is about 1607.0522068858.

Adding to 4150400021 its reverse (1200040514), we get a palindrome (5350440535).

The spelling of 4150400021 in words is "four billion, one hundred fifty million, four hundred thousand, twenty-one".