1206442040 has 32 divisors (see below), whose sum is σ = 2722725360. Its totient is φ = 481113600.

The previous prime is 1206442007. The next prime is 1206442067. The reversal of 1206442040 is 402446021.

It is a junction number, because it is equal to n+sod(n) for n = 1206441997 and 1206442015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32321 + ... + 58800.

Almost surely, 2^1206442040 is an apocalyptic number.

1206442040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1206442040 is an abundant number, since it is smaller than the sum of its proper divisors (1516283320).

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

1206442040 is a wasteful number, since it uses less digits than its factorization.

1206442040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91463 (or 91459 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1206442040 is about 34733.8745319321. The cubic root of 1206442040 is about 1064.5567567819.

Adding to 1206442040 its reverse (402446021), we get a palindrome (1608888061).

The spelling of 1206442040 in words is "one billion, two hundred six million, four hundred forty-two thousand, forty".