42504215401 has 4 divisors (see below), whose sum is σ = 42505878100. Its totient is φ = 42502552704.

The previous prime is 42504215389. The next prime is 42504215419. The reversal of 42504215401 is 10451240524.

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 5409455401 + 37094760000 = 73549^2 + 192600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42504215401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42504215401.

It is not an unprimeable number, because it can be changed into a prime (42504215491) 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, 792396 + ... + 844333.

It is an arithmetic number, because the mean of its divisors is an integer number (10626469525).

Almost surely, 2^42504215401 is an apocalyptic number.

It is an amenable number.

42504215401 is a deficient number, since it is larger than the sum of its proper divisors (1662699).

42504215401 is a wasteful number, since it uses less digits than its factorization.

42504215401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662698.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 42504215401 its reverse (10451240524), we get a palindrome (52955455925).

The spelling of 42504215401 in words is "forty-two billion, five hundred four million, two hundred fifteen thousand, four hundred one".