145540234420 has 192 divisors, whose sum is σ = 374520029184. Its totient is φ = 46373068800.

The previous prime is 145540234409. The next prime is 145540234457. The reversal of 145540234420 is 24432045541.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 133891117 + ... + 133892203.

It is an arithmetic number, because the mean of its divisors is an integer number (1950625152).

Almost surely, 2^145540234420 is an apocalyptic number.

145540234420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145540234420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187260014592).

145540234420 is an abundant number, since it is smaller than the sum of its proper divisors (228979794764).

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

145540234420 is a wasteful number, since it uses less digits than its factorization.

145540234420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 145540234420 its reverse (24432045541), we get a palindrome (169972279961).

The spelling of 145540234420 in words is "one hundred forty-five billion, five hundred forty million, two hundred thirty-four thousand, four hundred twenty".