942640 has 20 divisors (see below), whose sum is σ = 2191824. Its totient is φ = 377024.

The previous prime is 942637. The next prime is 942653. The reversal of 942640 is 46249.

It is a tau number, because it is divible by the number of its divisors (20).

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, 5812 + ... + 5971.

2⁹⁴²⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

942640 is an abundant number, since it is smaller than the sum of its proper divisors (1249184).

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

942640 is a wasteful number, since it uses less digits than its factorization.

942640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11796 (or 11790 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 942640 is about 970.8964929384. The cubic root of 942640 is about 98.0502310865.

Adding to 942640 its reverse (46249), we get a palindrome (988889).

It can be divided in two parts, 94 and 2640, that multiplied together give a triangular number (248160 = T₇₀₄).

The spelling of 942640 in words is "nine hundred forty-two thousand, six hundred forty".