145642074 has 8 divisors (see below), whose sum is σ = 291284160. Its totient is φ = 48547356.

The previous prime is 145642033. The next prime is 145642139. The reversal of 145642074 is 470246541.

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

145642074 is an admirable number.

It is a super-2 number, since 2×145642074² = 42423227438042952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12136834 + ... + 12136845.

It is an arithmetic number, because the mean of its divisors is an integer number (36410520).

Almost surely, 2^145642074 is an apocalyptic number.

145642074 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145642074 is a wasteful number, since it uses less digits than its factorization.

145642074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24273684.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 145642074 is about 12068.2258016661. The cubic root of 145642074 is about 526.1330919509.

The spelling of 145642074 in words is "one hundred forty-five million, six hundred forty-two thousand, seventy-four".