145440542 has 32 divisors (see below), whose sum is σ = 249861024. Its totient is φ = 62899200.

The previous prime is 145440521. The next prime is 145440557. The reversal of 145440542 is 245044541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123617 + ... + 124787.

It is an arithmetic number, because the mean of its divisors is an integer number (7808157).

Almost surely, 2^145440542 is an apocalyptic number.

145440542 is a deficient number, since it is larger than the sum of its proper divisors (104420482).

145440542 is a wasteful number, since it uses less digits than its factorization.

145440542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 145440542 is about 12059.8732165807. The cubic root of 145440542 is about 525.8903013055.

The spelling of 145440542 in words is "one hundred forty-five million, four hundred forty thousand, five hundred forty-two".