145403140021 has 8 divisors (see below), whose sum is σ = 146037369600. Its totient is φ = 144769126320.

The previous prime is 145403140007. The next prime is 145403140027. The reversal of 145403140021 is 120041304541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145403140021 - 2⁵ = 145403139989 is a prime.

It is a super-2 number, since 2×145403140021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145403140027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378600 + ... + 1480318.

It is an arithmetic number, because the mean of its divisors is an integer number (18254671200).

Almost surely, 2^145403140021 is an apocalyptic number.

It is an amenable number.

145403140021 is a deficient number, since it is larger than the sum of its proper divisors (634229579).

145403140021 is a wasteful number, since it uses less digits than its factorization.

145403140021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107939.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 145403140021 its reverse (120041304541), we get a palindrome (265444444562).

The spelling of 145403140021 in words is "one hundred forty-five billion, four hundred three million, one hundred forty thousand, twenty-one".