1220432542 has 16 divisors (see below), whose sum is σ = 2120831712. Its totient is φ = 515877120.

The previous prime is 1220432519. The next prime is 1220432557. The reversal of 1220432542 is 2452340221.

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, 596059 + ... + 598102.

It is an arithmetic number, because the mean of its divisors is an integer number (132551982).

Almost surely, 2^1220432542 is an apocalyptic number.

1220432542 is a deficient number, since it is larger than the sum of its proper divisors (900399170).

1220432542 is a wasteful number, since it uses less digits than its factorization.

1220432542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194243.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1220432542 is about 34934.6896651452. The cubic root of 1220432542 is about 1068.6559950057.

Adding to 1220432542 its reverse (2452340221), we get a palindrome (3672772763).

The spelling of 1220432542 in words is "one billion, two hundred twenty million, four hundred thirty-two thousand, five hundred forty-two".