1220427373 has 8 divisors (see below), whose sum is σ = 1341095040. Its totient is φ = 1101379680.

The previous prime is 1220427371. The next prime is 1220427389. The reversal of 1220427373 is 3737240221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220427373 - 2¹ = 1220427371 is a prime.

It is a super-2 number, since 2×1220427373² = 2978885945535362258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220427371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403413 + ... + 406426.

It is an arithmetic number, because the mean of its divisors is an integer number (167636880).

Almost surely, 2^1220427373 is an apocalyptic number.

It is an amenable number.

1220427373 is a deficient number, since it is larger than the sum of its proper divisors (120667667).

1220427373 is a wasteful number, since it uses less digits than its factorization.

1220427373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809987.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 1220427373 is about 34934.6156841606. The cubic root of 1220427373 is about 1068.6544862809.

Adding to 1220427373 its reverse (3737240221), we get a palindrome (4957667594).

The spelling of 1220427373 in words is "one billion, two hundred twenty million, four hundred twenty-seven thousand, three hundred seventy-three".