402141 has 4 divisors (see below), whose sum is σ = 536192. Its totient is φ = 268092.

The previous prime is 402139. The next prime is 402197. The reversal of 402141 is 141204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 402141 - 2¹ = 402139 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

402141 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402131) 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, 67021 + ... + 67026.

It is an arithmetic number, because the mean of its divisors is an integer number (134048).

2⁴⁰²¹⁴¹ is an apocalyptic number.

It is an amenable number.

402141 is a deficient number, since it is larger than the sum of its proper divisors (134051).

402141 is a wasteful number, since it uses less digits than its factorization.

402141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134050.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 402141 is about 634.1458822700. The cubic root of 402141 is about 73.8118546478.

Adding to 402141 its reverse (141204), we get a palindrome (543345).

The spelling of 402141 in words is "four hundred two thousand, one hundred forty-one", and thus it is an iban number.