145303254442 has 4 divisors (see below), whose sum is σ = 217954881666. Its totient is φ = 72651627220.

The previous prime is 145303254419. The next prime is 145303254449. The reversal of 145303254442 is 244452303541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244452303541 = 418181 ⋅584561.

It can be written as a sum of positive squares in only one way, i.e., 94795636321 + 50507618121 = 307889^2 + 224739^2 .

It is a super-2 number, since 2×145303254442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145303254449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36325813609 + ... + 36325813612.

Almost surely, 2^145303254442 is an apocalyptic number.

145303254442 is a deficient number, since it is larger than the sum of its proper divisors (72651627224).

145303254442 is an equidigital number, since it uses as much as digits as its factorization.

145303254442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72651627223.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 145303254442 its reverse (244452303541), we get a palindrome (389755557983).

The spelling of 145303254442 in words is "one hundred forty-five billion, three hundred three million, two hundred fifty-four thousand, four hundred forty-two".