842626 has 4 divisors (see below), whose sum is σ = 1263942. Its totient is φ = 421312.

The previous prime is 842623. The next prime is 842627. The reversal of 842626 is 626248.

842626 = T₇₄₈ + T₇₄₉ + T₇₅₀.

842626 is digitally balanced in base 2, 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., 488601 + 354025 = 699^2 + 595^2 .

It is a junction number, because it is equal to n+sod(n) for n = 842594 and 842603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210655 + ... + 210658.

2⁸⁴²⁶²⁶ is an apocalyptic number.

842626 is the 750-th centered triangular number.

842626 is a deficient number, since it is larger than the sum of its proper divisors (421316).

842626 is a wasteful number, since it uses less digits than its factorization.

842626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421315.

The product of its digits is 4608, while the sum is 28.

The square root of 842626 is about 917.9466215418. The cubic root of 842626 is about 94.4521000586.

The spelling of 842626 in words is "eight hundred forty-two thousand, six hundred twenty-six".