421138355 has 8 divisors (see below), whose sum is σ = 551308464. Its totient is φ = 306282400.

The previous prime is 421138351. The next prime is 421138381. The reversal of 421138355 is 553831124.

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

It is not a de Polignac number, because 421138355 - 2² = 421138351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421138351) 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, 3828476 + ... + 3828585.

It is an arithmetic number, because the mean of its divisors is an integer number (68913558).

Almost surely, 2^421138355 is an apocalyptic number.

421138355 is a deficient number, since it is larger than the sum of its proper divisors (130170109).

421138355 is a wasteful number, since it uses less digits than its factorization.

421138355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7657077.

The product of its digits is 14400, while the sum is 32.

The square root of 421138355 is about 20521.6557567853. The cubic root of 421138355 is about 749.5632153045.

Adding to 421138355 its reverse (553831124), we get a palindrome (974969479).

The spelling of 421138355 in words is "four hundred twenty-one million, one hundred thirty-eight thousand, three hundred fifty-five".