354540421 has 8 divisors (see below), whose sum is σ = 357576920. Its totient is φ = 351516672.

The previous prime is 354540409. The next prime is 354540427. The reversal of 354540421 is 124045453.

It can be written as a sum of positive squares in 4 ways, for example, as 37344321 + 317196100 = 6111^2 + 17810^2 .

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 354540421 - 2⁷ = 354540293 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 354540421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354540427) 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, 57475 + ... + 63343.

It is an arithmetic number, because the mean of its divisors is an integer number (44697115).

Almost surely, 2^354540421 is an apocalyptic number.

It is an amenable number.

354540421 is a deficient number, since it is larger than the sum of its proper divisors (3036499).

354540421 is a wasteful number, since it uses less digits than its factorization.

354540421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 354540421 is about 18829.2437713255. The cubic root of 354540421 is about 707.7641900644.

Adding to 354540421 its reverse (124045453), we get a palindrome (478585874).

The spelling of 354540421 in words is "three hundred fifty-four million, five hundred forty thousand, four hundred twenty-one".