145021722 has 32 divisors (see below), whose sum is σ = 301689600. Its totient is φ = 46433088.

The previous prime is 145021711. The next prime is 145021733. The reversal of 145021722 is 227120541.

It is an interprime number because it is at equal distance from previous prime (145021711) and next prime (145021733).

It is a junction number, because it is equal to n+sod(n) for n = 145021692 and 145021701.

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 15 ways as a sum of consecutive naturals, for example, 13404 + ... + 21672.

It is an arithmetic number, because the mean of its divisors is an integer number (9427800).

Almost surely, 2^145021722 is an apocalyptic number.

145021722 is an abundant number, since it is smaller than the sum of its proper divisors (156667878).

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

145021722 is a wasteful number, since it uses less digits than its factorization.

145021722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8390.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 145021722 is about 12042.4965019717. The cubic root of 145021722 is about 525.3850200625.

The spelling of 145021722 in words is "one hundred forty-five million, twenty-one thousand, seven hundred twenty-two".