145145142 has 64 divisors (see below), whose sum is σ = 341510400. Its totient is φ = 45567360.

The previous prime is 145145141. The next prime is 145145153. The reversal of 145145142 is 241541541.

145145142 is a `hidden beast` number, since 1 + 4 + 514 + 5 + 142 = 666.

It is a super-2 number, since 2×145145142² = 42134224492400328, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145145141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246973 + ... + 247559.

It is an arithmetic number, because the mean of its divisors is an integer number (5336100).

Almost surely, 2^145145142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145145142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170755200).

145145142 is an abundant number, since it is smaller than the sum of its proper divisors (196365258).

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

145145142 is a wasteful number, since it uses less digits than its factorization.

145145142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 852 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 145145142 is about 12047.6197649162. The cubic root of 145145142 is about 525.5340198864.

Adding to 145145142 its reverse (241541541), we get a palindrome (386686683).

The spelling of 145145142 in words is "one hundred forty-five million, one hundred forty-five thousand, one hundred forty-two".