1242161546 has 16 divisors (see below), whose sum is σ = 1879836000. Its totient is φ = 615565008.

The previous prime is 1242161527. The next prime is 1242161567. The reversal of 1242161546 is 6451612421.

It is a super-2 number, since 2×1242161546² = 3085930612722220232, which contains 22 as substring.

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, 175280 + ... + 182228.

It is an arithmetic number, because the mean of its divisors is an integer number (117489750).

Almost surely, 2^1242161546 is an apocalyptic number.

1242161546 is a deficient number, since it is larger than the sum of its proper divisors (637674454).

1242161546 is a wasteful number, since it uses less digits than its factorization.

1242161546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7733.

The product of its digits is 11520, while the sum is 32.

The square root of 1242161546 is about 35244.3122503476. The cubic root of 1242161546 is about 1074.9609637168.

Adding to 1242161546 its reverse (6451612421), we get a palindrome (7693773967).

The spelling of 1242161546 in words is "one billion, two hundred forty-two million, one hundred sixty-one thousand, five hundred forty-six".