842547406 has 8 divisors (see below), whose sum is σ = 1264294080. Its totient is φ = 421116048.

The previous prime is 842547379. The next prime is 842547439. The reversal of 842547406 is 604745248.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×842547406² = 1419772262714657672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72031 + ... + 82906.

It is an arithmetic number, because the mean of its divisors is an integer number (158036760).

Almost surely, 2^842547406 is an apocalyptic number.

842547406 is a deficient number, since it is larger than the sum of its proper divisors (421746674).

842547406 is a wasteful number, since it uses less digits than its factorization.

842547406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157658.

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 842547406 is about 29026.6671528097. The cubic root of 842547406 is about 944.4916336662.

The spelling of 842547406 in words is "eight hundred forty-two million, five hundred forty-seven thousand, four hundred six".