6407442 has 12 divisors (see below), whose sum is σ = 13882830. Its totient is φ = 2135808.

The previous prime is 6407441. The next prime is 6407449. The reversal of 6407442 is 2447046.

It can be written as a sum of positive squares in only one way, i.e., 5716881 + 690561 = 2391^2 + 831^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6407441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177967 + ... + 178002.

Almost surely, 2^6407442 is an apocalyptic number.

6407442 is an abundant number, since it is smaller than the sum of its proper divisors (7475388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6407442 is a wasteful number, since it uses less digits than its factorization.

6407442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355977 (or 355974 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 6407442 is about 2531.2925551978. The cubic root of 6407442 is about 185.7354894359.

The spelling of 6407442 in words is "six million, four hundred seven thousand, four hundred forty-two".