145420164 has 24 divisors (see below), whose sum is σ = 377015520. Its totient is φ = 48473352.

The previous prime is 145420139. The next prime is 145420189. The reversal of 145420164 is 461024541.

145420164 is a `hidden beast` number, since 1 + 454 + 201 + 6 + 4 = 666.

145420164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145420139) and next prime (145420189).

It is a super-2 number, since 2×145420164² = 42294048195573792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 673134 + ... + 673349.

It is an arithmetic number, because the mean of its divisors is an integer number (15708980).

Almost surely, 2^145420164 is an apocalyptic number.

It is an amenable number.

145420164 is an abundant number, since it is smaller than the sum of its proper divisors (231595356).

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

145420164 is a wasteful number, since it uses less digits than its factorization.

145420164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346496 (or 1346488 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 145420164 is about 12059.0283190645. The cubic root of 145420164 is about 525.8657389357.

The spelling of 145420164 in words is "one hundred forty-five million, four hundred twenty thousand, one hundred sixty-four".