145212042 has 16 divisors (see below), whose sum is σ = 291931200. Its totient is φ = 48152832.

The previous prime is 145211993. The next prime is 145212047. The reversal of 145212042 is 240212541.

It is not an unprimeable number, because it can be changed into a prime (145212047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61542 + ... + 63857.

It is an arithmetic number, because the mean of its divisors is an integer number (18245700).

Almost surely, 2^145212042 is an apocalyptic number.

145212042 is an abundant number, since it is smaller than the sum of its proper divisors (146719158).

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

145212042 is a wasteful number, since it uses less digits than its factorization.

145212042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125597.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 145212042 is about 12050.3959271055. The cubic root of 145212042 is about 525.6147501704.

Adding to 145212042 its reverse (240212541), we get a palindrome (385424583).

The spelling of 145212042 in words is "one hundred forty-five million, two hundred twelve thousand, forty-two".