407842 has 4 divisors (see below), whose sum is σ = 611766. Its totient is φ = 203920.

The previous prime is 407833. The next prime is 407843. The reversal of 407842 is 248704.

407842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 385641 + 22201 = 621^2 + 149^2 .

It is not an unprimeable number, because it can be changed into a prime (407843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101959 + ... + 101962.

2⁴⁰⁷⁸⁴² is an apocalyptic number.

407842 is a deficient number, since it is larger than the sum of its proper divisors (203924).

407842 is a wasteful number, since it uses less digits than its factorization.

407842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203923.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 407842 is about 638.6250856332. The cubic root of 407842 is about 74.1590200985.

The spelling of 407842 in words is "four hundred seven thousand, eight hundred forty-two".