145614021 has 16 divisors (see below), whose sum is σ = 222092928. Its totient is φ = 83131200.

The previous prime is 145614019. The next prime is 145614031. The reversal of 145614021 is 120416541.

It is a happy number.

145614021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145614021 - 2¹ = 145614019 is a prime.

It is a super-2 number, since 2×145614021² = 42406886223576882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145613982 and 145614000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145614011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26491 + ... + 31511.

It is an arithmetic number, because the mean of its divisors is an integer number (13880808).

Almost surely, 2^145614021 is an apocalyptic number.

It is an amenable number.

145614021 is a deficient number, since it is larger than the sum of its proper divisors (76478907).

145614021 is a wasteful number, since it uses less digits than its factorization.

145614021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6412.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 145614021 is about 12067.0634787425. The cubic root of 145614021 is about 526.0993092236.

The spelling of 145614021 in words is "one hundred forty-five million, six hundred fourteen thousand, twenty-one".