145420878 has 32 divisors (see below), whose sum is σ = 299756160. Its totient is φ = 46997280.

The previous prime is 145420861. The next prime is 145420901. The reversal of 145420878 is 878024541.

It is a happy number.

145420878 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 2×145420878² = 42294463516581768, which 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 15 ways as a sum of consecutive naturals, for example, 72493 + ... + 74471.

It is an arithmetic number, because the mean of its divisors is an integer number (9367380).

Almost surely, 2^145420878 is an apocalyptic number.

145420878 is an abundant number, since it is smaller than the sum of its proper divisors (154335282).

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

145420878 is a wasteful number, since it uses less digits than its factorization.

145420878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 145420878 is about 12059.0579234035. The cubic root of 145420878 is about 525.8665995856.

The spelling of 145420878 in words is "one hundred forty-five million, four hundred twenty thousand, eight hundred seventy-eight".