145317742 has 8 divisors (see below), whose sum is σ = 220962816. Its totient is φ = 71663472.

The previous prime is 145317713. The next prime is 145317761. The reversal of 145317742 is 247713541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145317742² = 42234492279957128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145317698 and 145317707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497518 + ... + 497809.

It is an arithmetic number, because the mean of its divisors is an integer number (27620352).

Almost surely, 2^145317742 is an apocalyptic number.

145317742 is a deficient number, since it is larger than the sum of its proper divisors (75645074).

145317742 is an equidigital number, since it uses as much as digits as its factorization.

145317742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995402.

The product of its digits is 23520, while the sum is 34.

The square root of 145317742 is about 12054.7808773117. The cubic root of 145317742 is about 525.7422510849.

The spelling of 145317742 in words is "one hundred forty-five million, three hundred seventeen thousand, seven hundred forty-two".