145419858 has 24 divisors (see below), whose sum is σ = 315636048. Its totient is φ = 48387192.

The previous prime is 145419817. The next prime is 145419877. The reversal of 145419858 is 858914541.

It is a happy number.

145419858 is a `hidden beast` number, since 1 + 454 + 198 + 5 + 8 = 666.

145419858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145419858² = 42293870201480328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3685 + ... + 17447.

It is an arithmetic number, because the mean of its divisors is an integer number (13151502).

Almost surely, 2^145419858 is an apocalyptic number.

145419858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145419858 is an abundant number, since it is smaller than the sum of its proper divisors (170216190).

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

145419858 is a wasteful number, since it uses less digits than its factorization.

145419858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14358 (or 14355 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 145419858 is about 12059.0156314684. The cubic root of 145419858 is about 525.8653700849.

It can be divided in two parts, 1454 and 19858, that added together give a palindrome (21312).

The spelling of 145419858 in words is "one hundred forty-five million, four hundred nineteen thousand, eight hundred fifty-eight".