1220440434 has 16 divisors (see below), whose sum is σ = 2486935872. Its totient is φ = 399137648.

The previous prime is 1220440423. The next prime is 1220440451. The reversal of 1220440434 is 4340440221.

It is a happy number.

1220440434 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 1918614 + ... + 1919249.

It is an arithmetic number, because the mean of its divisors is an integer number (155433492).

Almost surely, 2^1220440434 is an apocalyptic number.

1220440434 is an abundant number, since it is smaller than the sum of its proper divisors (1266495438).

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

1220440434 is a wasteful number, since it uses less digits than its factorization.

1220440434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837921.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1220440434 is about 34934.8026185923. The cubic root of 1220440434 is about 1068.6582985100.

Adding to 1220440434 its reverse (4340440221), we get a palindrome (5560880655).

The spelling of 1220440434 in words is "one billion, two hundred twenty million, four hundred forty thousand, four hundred thirty-four".