145498142 has 4 divisors (see below), whose sum is σ = 218247216. Its totient is φ = 72749070.

The previous prime is 145498139. The next prime is 145498151. The reversal of 145498142 is 241894541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241894541 = 7 ⋅34556363.

It is a junction number, because it is equal to n+sod(n) for n = 145498096 and 145498105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36374534 + ... + 36374537.

It is an arithmetic number, because the mean of its divisors is an integer number (54561804).

Almost surely, 2^145498142 is an apocalyptic number.

145498142 is a deficient number, since it is larger than the sum of its proper divisors (72749074).

145498142 is an equidigital number, since it uses as much as digits as its factorization.

145498142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72749073.

The product of its digits is 46080, while the sum is 38.

The square root of 145498142 is about 12062.2610649911. The cubic root of 145498142 is about 525.9597163461.

The spelling of 145498142 in words is "one hundred forty-five million, four hundred ninety-eight thousand, one hundred forty-two".