242191740 has 48 divisors (see below), whose sum is σ = 775014912. Its totient is φ = 55358016.

The previous prime is 242191739. The next prime is 242191753. The reversal of 242191740 is 47191242.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 242191698 and 242191707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287904 + ... + 288743.

It is an arithmetic number, because the mean of its divisors is an integer number (16146144).

Almost surely, 2^242191740 is an apocalyptic number.

242191740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242191740 is an abundant number, since it is smaller than the sum of its proper divisors (532823172).

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

242191740 is a wasteful number, since it uses less digits than its factorization.

242191740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576666 (or 576664 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 242191740 is about 15562.5107228879. The cubic root of 242191740 is about 623.3325065682.

The spelling of 242191740 in words is "two hundred forty-two million, one hundred ninety-one thousand, seven hundred forty".