402133421 has 8 divisors (see below), whose sum is σ = 413388864. Its totient is φ = 391033440.

The previous prime is 402133409. The next prime is 402133477. The reversal of 402133421 is 124331204.

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

It is a cyclic number.

It is not a de Polignac number, because 402133421 - 2¹⁸ = 401871277 is a prime.

It is a super-2 number, since 2×402133421² = 323422576570326482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402133393 and 402133402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402133481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33611 + ... + 43976.

It is an arithmetic number, because the mean of its divisors is an integer number (51673608).

Almost surely, 2^402133421 is an apocalyptic number.

It is an amenable number.

402133421 is a deficient number, since it is larger than the sum of its proper divisors (11255443).

402133421 is an equidigital number, since it uses as much as digits as its factorization.

402133421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77731.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 402133421 is about 20053.2645970675. The cubic root of 402133421 is about 738.1139094351.

Adding to 402133421 its reverse (124331204), we get a palindrome (526464625).

It can be divided in two parts, 40213 and 3421, that added together give a palindrome (43634).

The spelling of 402133421 in words is "four hundred two million, one hundred thirty-three thousand, four hundred twenty-one".