33540002421 has 4 divisors (see below), whose sum is σ = 44720003232. Its totient is φ = 22360001612.

The previous prime is 33540002413. The next prime is 33540002429. The reversal of 33540002421 is 12420004533.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12420004533 = 3 ⋅4140001511.

It is an interprime number because it is at equal distance from previous prime (33540002413) and next prime (33540002429).

It is a cyclic number.

It is not a de Polignac number, because 33540002421 - 2³ = 33540002413 is a prime.

It is a super-2 number, since 2×33540002421² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33540002391 and 33540002400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33540002429) 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, 5590000401 + ... + 5590000406.

It is an arithmetic number, because the mean of its divisors is an integer number (11180000808).

Almost surely, 2^33540002421 is an apocalyptic number.

It is an amenable number.

33540002421 is a deficient number, since it is larger than the sum of its proper divisors (11180000811).

33540002421 is a wasteful number, since it uses less digits than its factorization.

33540002421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11180000810.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 33540002421 its reverse (12420004533), we get a palindrome (45960006954).

The spelling of 33540002421 in words is "thirty-three billion, five hundred forty million, two thousand, four hundred twenty-one".