1220020143442 has 16 divisors (see below), whose sum is σ = 1856067219072. Its totient is φ = 601333495840.

The previous prime is 1220020143439. The next prime is 1220020143493. The reversal of 1220020143442 is 2443410200221.

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, 409278 + ... + 1614790.

It is an arithmetic number, because the mean of its divisors is an integer number (116004201192).

Almost surely, 2^{1220020143442} is an apocalyptic number.

1220020143442 is a deficient number, since it is larger than the sum of its proper divisors (636047075630).

1220020143442 is a wasteful number, since it uses less digits than its factorization.

1220020143442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212713.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1220020143442 its reverse (2443410200221), we get a palindrome (3663430343663).

The spelling of 1220020143442 in words is "one trillion, two hundred twenty billion, twenty million, one hundred forty-three thousand, four hundred forty-two".