145342131 has 16 divisors (see below), whose sum is σ = 213504768. Its totient is φ = 87212000.

The previous prime is 145342121. The next prime is 145342133. The reversal of 145342131 is 131243541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 145342131 - 2¹³ = 145333939 is a prime.

It is a super-2 number, since 2×145342131² = 42248670087242322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145342133) 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, 18471 + ... + 25136.

It is an arithmetic number, because the mean of its divisors is an integer number (13344048).

Almost surely, 2^145342131 is an apocalyptic number.

145342131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145342131 is a deficient number, since it is larger than the sum of its proper divisors (68162637).

145342131 is a wasteful number, since it uses less digits than its factorization.

145342131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43722.

The product of its digits is 1440, while the sum is 24.

The square root of 145342131 is about 12055.7924252203. The cubic root of 145342131 is about 525.7716616036.

Adding to 145342131 its reverse (131243541), we get a palindrome (276585672).

The spelling of 145342131 in words is "one hundred forty-five million, three hundred forty-two thousand, one hundred thirty-one".