145533144142 has 32 divisors (see below), whose sum is σ = 221793292800. Its totient is φ = 71608625088.

The previous prime is 145533144083. The next prime is 145533144157. The reversal of 145533144142 is 241441335541.

It is a happy number.

It is a super-2 number, since 2×145533144142² (a number of 23 digits) 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, 87301593 + ... + 87303259.

It is an arithmetic number, because the mean of its divisors is an integer number (6931040400).

Almost surely, 2^145533144142 is an apocalyptic number.

145533144142 is a deficient number, since it is larger than the sum of its proper divisors (76260148658).

145533144142 is a wasteful number, since it uses less digits than its factorization.

145533144142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240.

The product of its digits is 115200, while the sum is 37.

Adding to 145533144142 its reverse (241441335541), we get a palindrome (386974479683).

The spelling of 145533144142 in words is "one hundred forty-five billion, five hundred thirty-three million, one hundred forty-four thousand, one hundred forty-two".