153421073 has 12 divisors (see below), whose sum is σ = 175906188. Its totient is φ = 133286400.

The previous prime is 153421013. The next prime is 153421087. The reversal of 153421073 is 370124351.

It can be written as a sum of positive squares in 6 ways, for example, as 25120144 + 128300929 = 5012^2 + 11327^2 .

It is not a de Polignac number, because 153421073 - 2¹⁰ = 153420049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153421013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23828 + ... + 29573.

It is an arithmetic number, because the mean of its divisors is an integer number (14658849).

Almost surely, 2^153421073 is an apocalyptic number.

153421073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

153421073 is a deficient number, since it is larger than the sum of its proper divisors (22485115).

153421073 is a wasteful number, since it uses less digits than its factorization.

153421073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53444 (or 53431 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 153421073 is about 12386.3260493174. The cubic root of 153421073 is about 535.3383285213.

The spelling of 153421073 in words is "one hundred fifty-three million, four hundred twenty-one thousand, seventy-three".