145242405020 has 24 divisors (see below), whose sum is σ = 306951789984. Its totient is φ = 57726916416.

The previous prime is 145242404981. The next prime is 145242405023. The reversal of 145242405020 is 20504242541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145242405023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23124632 + ... + 23130911.

It is an arithmetic number, because the mean of its divisors is an integer number (12789657916).

Almost surely, 2^145242405020 is an apocalyptic number.

145242405020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145242405020 is an abundant number, since it is smaller than the sum of its proper divisors (161709384964).

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

145242405020 is a wasteful number, since it uses less digits than its factorization.

145242405020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46255709 (or 46255707 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 145242405020 its reverse (20504242541), we get a palindrome (165746647561).

The spelling of 145242405020 in words is "one hundred forty-five billion, two hundred forty-two million, four hundred five thousand, twenty".