1242406160 has 40 divisors (see below), whose sum is σ = 2893575960. Its totient is φ = 496105472.

The previous prime is 1242406159. The next prime is 1242406169. The reversal of 1242406160 is 616042421.

It can be written as a sum of positive squares in 4 ways, for example, as 344325136 + 898081024 = 18556^2 + 29968^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1242406169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34346 + ... + 60534.

It is an arithmetic number, because the mean of its divisors is an integer number (72339399).

Almost surely, 2^1242406160 is an apocalyptic number.

1242406160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242406160 is an abundant number, since it is smaller than the sum of its proper divisors (1651169800).

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

1242406160 is a wasteful number, since it uses less digits than its factorization.

1242406160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26795 (or 26789 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1242406160 is about 35247.7823415885. The cubic root of 1242406160 is about 1075.0315217005.

Adding to 1242406160 its reverse (616042421), we get a palindrome (1858448581).

The spelling of 1242406160 in words is "one billion, two hundred forty-two million, four hundred six thousand, one hundred sixty".