145111420 has 24 divisors (see below), whose sum is σ = 304968384. Its totient is φ = 57999936.

The previous prime is 145111411. The next prime is 145111441. The reversal of 145111420 is 24111541.

145111420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39502 + ... + 43018.

It is an arithmetic number, because the mean of its divisors is an integer number (12707016).

Almost surely, 2^145111420 is an apocalyptic number.

145111420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145111420 is an abundant number, since it is smaller than the sum of its proper divisors (159856964).

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

145111420 is a wasteful number, since it uses less digits than its factorization.

145111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5589 (or 5587 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 145111420 is about 12046.2201540566. The cubic root of 145111420 is about 525.4933171098.

Adding to 145111420 its reverse (24111541), we get a palindrome (169222961).

It can be divided in two parts, 14511 and 1420, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 145111420 in words is "one hundred forty-five million, one hundred eleven thousand, four hundred twenty".