1220142454 has 16 divisors (see below), whose sum is σ = 1892183040. Its totient is φ = 589475880.

The previous prime is 1220142449. The next prime is 1220142487. The reversal of 1220142454 is 4542410221.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 25927 + ... + 55789.

It is an arithmetic number, because the mean of its divisors is an integer number (118261440).

Almost surely, 2^1220142454 is an apocalyptic number.

1220142454 is a deficient number, since it is larger than the sum of its proper divisors (672040586).

1220142454 is a wasteful number, since it uses less digits than its factorization.

1220142454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30555.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1220142454 is about 34930.5375566996. The cubic root of 1220142454 is about 1068.5713176926.

Adding to 1220142454 its reverse (4542410221), we get a palindrome (5762552675).

The spelling of 1220142454 in words is "one billion, two hundred twenty million, one hundred forty-two thousand, four hundred fifty-four".