402611401 has 4 divisors (see below), whose sum is σ = 406762132. Its totient is φ = 398460672.

The previous prime is 402611369. The next prime is 402611411. The reversal of 402611401 is 104116204.

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 313290000 + 89321401 = 17700^2 + 9451^2 .

It is a cyclic number.

It is not a de Polignac number, because 402611401 - 2⁵ = 402611369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402611411) 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, 2075220 + ... + 2075413.

It is an arithmetic number, because the mean of its divisors is an integer number (101690533).

Almost surely, 2^402611401 is an apocalyptic number.

It is an amenable number.

402611401 is a deficient number, since it is larger than the sum of its proper divisors (4150731).

402611401 is an equidigital number, since it uses as much as digits as its factorization.

402611401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150730.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 402611401 is about 20065.1788180420. The cubic root of 402611401 is about 738.4062369547.

Adding to 402611401 its reverse (104116204), we get a palindrome (506727605).

The spelling of 402611401 in words is "four hundred two million, six hundred eleven thousand, four hundred one".