147122420 has 24 divisors (see below), whose sum is σ = 327131784. Its totient is φ = 55387136.

The previous prime is 147122413. The next prime is 147122431. The reversal of 147122420 is 24221741.

It can be written as a sum of positive squares in 4 ways, for example, as 4892944 + 142229476 = 2212^2 + 11926^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216017 + ... + 216696.

It is an arithmetic number, because the mean of its divisors is an integer number (13630491).

Almost surely, 2^147122420 is an apocalyptic number.

147122420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

147122420 is an abundant number, since it is smaller than the sum of its proper divisors (180009364).

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

147122420 is a wasteful number, since it uses less digits than its factorization.

147122420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432739 (or 432737 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 147122420 is about 12129.4031180434. The cubic root of 147122420 is about 527.9096732919.

The spelling of 147122420 in words is "one hundred forty-seven million, one hundred twenty-two thousand, four hundred twenty".