36340421 has 4 divisors (see below), whose sum is σ = 39135852. Its totient is φ = 33544992.

The previous prime is 36340411. The next prime is 36340459. The reversal of 36340421 is 12404363.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12404363 = 3511 ⋅3533.

It can be written as a sum of positive squares in 2 ways, for example, as 3724900 + 32615521 = 1930^2 + 5711^2 .

It is a de Polignac number, because none of the positive numbers 2^k-36340421 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 (36340411) 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, 1397696 + ... + 1397721.

It is an arithmetic number, because the mean of its divisors is an integer number (9783963).

Almost surely, 2^36340421 is an apocalyptic number.

It is an amenable number.

36340421 is a deficient number, since it is larger than the sum of its proper divisors (2795431).

36340421 is a wasteful number, since it uses less digits than its factorization.

36340421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795430.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 36340421 is about 6028.3016679659. The cubic root of 36340421 is about 331.2302441760.

Adding to 36340421 its reverse (12404363), we get a palindrome (48744784).

The spelling of 36340421 in words is "thirty-six million, three hundred forty thousand, four hundred twenty-one".