1652020123 has 24 divisors (see below), whose sum is σ = 1834494480. Its totient is φ = 1486442880.

The previous prime is 1652020109. The next prime is 1652020127. The reversal of 1652020123 is 3210202561.

It is not a de Polignac number, because 1652020123 - 2⁵ = 1652020091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1652020094 and 1652020103.

It is not an unprimeable number, because it can be changed into a prime (1652020127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1620708 + ... + 1621726.

It is an arithmetic number, because the mean of its divisors is an integer number (76437270).

Almost surely, 2^1652020123 is an apocalyptic number.

1652020123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1652020123 is a deficient number, since it is larger than the sum of its proper divisors (182474357).

1652020123 is a wasteful number, since it uses less digits than its factorization.

1652020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1652020123 is about 40645.0504120735. The cubic root of 1652020123 is about 1182.1477982715.

Adding to 1652020123 its reverse (3210202561), we get a palindrome (4862222684).

The spelling of 1652020123 in words is "one billion, six hundred fifty-two million, twenty thousand, one hundred twenty-three".