402430541 has 4 divisors (see below), whose sum is σ = 402702300. Its totient is φ = 402158784.

The previous prime is 402430529. The next prime is 402430573. The reversal of 402430541 is 145034204.

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 39375625 + 363054916 = 6275^2 + 19054^2 .

It is a cyclic number.

It is not a de Polignac number, because 402430541 - 2¹⁸ = 402168397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402430141) 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, 133646 + ... + 136623.

It is an arithmetic number, because the mean of its divisors is an integer number (100675575).

Almost surely, 2^402430541 is an apocalyptic number.

It is an amenable number.

402430541 is a deficient number, since it is larger than the sum of its proper divisors (271759).

402430541 is a wasteful number, since it uses less digits than its factorization.

402430541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271758.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 402430541 is about 20060.6714992295. The cubic root of 402430541 is about 738.2956521128.

Adding to 402430541 its reverse (145034204), we get a palindrome (547464745).

The spelling of 402430541 in words is "four hundred two million, four hundred thirty thousand, five hundred forty-one".