145269403420 has 24 divisors (see below), whose sum is σ = 310821706944. Its totient is φ = 57011388096.

The previous prime is 145269403381. The next prime is 145269403469. The reversal of 145269403420 is 24304962541.

It is a happy number.

It is a super-2 number, since 2×145269403420² (a number of 23 digits) contains 22 as substring.

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, 68522244 + ... + 68524363.

It is an arithmetic number, because the mean of its divisors is an integer number (12950904456).

Almost surely, 2^145269403420 is an apocalyptic number.

145269403420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145269403420 is an abundant number, since it is smaller than the sum of its proper divisors (165552303524).

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

145269403420 is a wasteful number, since it uses less digits than its factorization.

145269403420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137046669 (or 137046667 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 145269403420 in words is "one hundred forty-five billion, two hundred sixty-nine million, four hundred three thousand, four hundred twenty".