1240920234 has 24 divisors (see below), whose sum is σ = 2695063332. Its totient is φ = 412655040.

The previous prime is 1240920209. The next prime is 1240920251. The reversal of 1240920234 is 4320290421.

1240920234 is a `hidden beast` number, since 1 + 2 + 409 + 20 + 234 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 855387009 + 385533225 = 29247^2 + 19635^2 .

It is a super-2 number, since 2×1240920234² = 3079766054301229512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1240920198 and 1240920207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74299 + ... + 89454.

Almost surely, 2^1240920234 is an apocalyptic number.

1240920234 is an abundant number, since it is smaller than the sum of its proper divisors (1454143098).

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

1240920234 is a wasteful number, since it uses less digits than its factorization.

1240920234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164182 (or 164179 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1240920234 is about 35226.6977447504. The cubic root of 1240920234 is about 1074.6027691169.

The spelling of 1240920234 in words is "one billion, two hundred forty million, nine hundred twenty thousand, two hundred thirty-four".