145092042 has 48 divisors (see below), whose sum is σ = 335384712. Its totient is φ = 45173760.

The previous prime is 145092023. The next prime is 145092047. The reversal of 145092042 is 240290541.

145092042 is a `hidden beast` number, since 1 + 450 + 9 + 204 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 126765081 + 18326961 = 11259^2 + 4281^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145091997 and 145092015.

It is not an unprimeable number, because it can be changed into a prime (145092047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40192 + ... + 43652.

Almost surely, 2^145092042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145092042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167692356).

145092042 is an abundant number, since it is smaller than the sum of its proper divisors (190292670).

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

145092042 is a wasteful number, since it uses less digits than its factorization.

145092042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623 (or 3620 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 145092042 is about 12045.4158085140. The cubic root of 145092042 is about 525.4699248254.

The spelling of 145092042 in words is "one hundred forty-five million, ninety-two thousand, forty-two".