1220425141 has 8 divisors (see below), whose sum is σ = 1314613944. Its totient is φ = 1126280640.

The previous prime is 1220425139. The next prime is 1220425153. The reversal of 1220425141 is 1415240221.

It can be written as a sum of positive squares in 4 ways, for example, as 13140625 + 1207284516 = 3625^2 + 34746^2 .

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 1220425141 - 2¹ = 1220425139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220422141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66111 + ... + 82531.

It is an arithmetic number, because the mean of its divisors is an integer number (164326743).

Almost surely, 2^1220425141 is an apocalyptic number.

It is an amenable number.

1220425141 is a deficient number, since it is larger than the sum of its proper divisors (94188803).

1220425141 is a wasteful number, since it uses less digits than its factorization.

1220425141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22151.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1220425141 is about 34934.5837387538. The cubic root of 1220425141 is about 1068.6538348046.

Adding to 1220425141 its reverse (1415240221), we get a palindrome (2635665362).

The spelling of 1220425141 in words is "one billion, two hundred twenty million, four hundred twenty-five thousand, one hundred forty-one".