601201421 has 12 divisors (see below), whose sum is σ = 617711580. Its totient is φ = 584974080.

The previous prime is 601201373. The next prime is 601201423. The reversal of 601201421 is 124102106.

It can be written as a sum of positive squares in 2 ways, for example, as 15319396 + 585882025 = 3914^2 + 24205^2 .

It is not a de Polignac number, because 601201421 - 2⁶ = 601201357 is a prime.

It is a super-2 number, since 2×601201421² = 722886297224838482, which contains 22 as substring.

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 601201421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601201423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 646685 + ... + 647613.

It is an arithmetic number, because the mean of its divisors is an integer number (51475965).

Almost surely, 2^601201421 is an apocalyptic number.

601201421 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

601201421 is a deficient number, since it is larger than the sum of its proper divisors (16510159).

601201421 is an equidigital number, since it uses as much as digits as its factorization.

601201421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 601201421 is about 24519.4090671044. The cubic root of 601201421 is about 843.9952442587.

Adding to 601201421 its reverse (124102106), we get a palindrome (725303527).

The spelling of 601201421 in words is "six hundred one million, two hundred one thousand, four hundred twenty-one".