145540842 has 32 divisors (see below), whose sum is σ = 309811392. Its totient is φ = 45421824.

The previous prime is 145540819. The next prime is 145540861. The reversal of 145540842 is 248045541.

It is a happy number.

145540842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 16473 + ... + 23715.

It is an arithmetic number, because the mean of its divisors is an integer number (9681606).

Almost surely, 2^145540842 is an apocalyptic number.

145540842 is an abundant number, since it is smaller than the sum of its proper divisors (164270550).

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

145540842 is a wasteful number, since it uses less digits than its factorization.

145540842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7462.

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 145540842 is about 12064.0309183954. The cubic root of 145540842 is about 526.0111632419.

The spelling of 145540842 in words is "one hundred forty-five million, five hundred forty thousand, eight hundred forty-two".