1451420220 has 48 divisors (see below), whose sum is σ = 4303037088. Its totient is φ = 364277760.

The previous prime is 1451420219. The next prime is 1451420233. The reversal of 1451420220 is 220241541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 710461 + ... + 712500.

It is an arithmetic number, because the mean of its divisors is an integer number (89646606).

Almost surely, 2^1451420220 is an apocalyptic number.

1451420220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1451420220 is an abundant number, since it is smaller than the sum of its proper divisors (2851616868).

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

1451420220 is a wasteful number, since it uses less digits than its factorization.

1451420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422990 (or 1422988 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1451420220 is about 38097.5093674114. The cubic root of 1451420220 is about 1132.2206104847.

Adding to 1451420220 its reverse (220241541), we get a palindrome (1671661761).

The spelling of 1451420220 in words is "one billion, four hundred fifty-one million, four hundred twenty thousand, two hundred twenty".