1220142364 has 24 divisors (see below), whose sum is σ = 2546385408. Its totient is φ = 500182320.

The previous prime is 1220142359. The next prime is 1220142397. The reversal of 1220142364 is 4632410221.

It is a happy number.

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, 946672 + ... + 947959.

It is an arithmetic number, because the mean of its divisors is an integer number (106099392).

Almost surely, 2^1220142364 is an apocalyptic number.

1220142364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1220142364 is an abundant number, since it is smaller than the sum of its proper divisors (1326243044).

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

1220142364 is a wasteful number, since it uses less digits than its factorization.

1220142364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894665 (or 1894663 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1220142364 is about 34930.5362684285. The cubic root of 1220142364 is about 1068.5712914193.

Adding to 1220142364 its reverse (4632410221), we get a palindrome (5852552585).

The spelling of 1220142364 in words is "one billion, two hundred twenty million, one hundred forty-two thousand, three hundred sixty-four".