42670545 has 16 divisors (see below), whose sum is σ = 69939072. Its totient is φ = 22202240.

The previous prime is 42670519. The next prime is 42670553. The reversal of 42670545 is 54507624.

It is not a de Polignac number, because 42670545 - 2⁷ = 42670417 is a prime.

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, 34077 + ... + 35306.

It is an arithmetic number, because the mean of its divisors is an integer number (4371192).

Almost surely, 2^42670545 is an apocalyptic number.

It is an amenable number.

42670545 is a deficient number, since it is larger than the sum of its proper divisors (27268527).

42670545 is a wasteful number, since it uses less digits than its factorization.

42670545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69432.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 42670545 is about 6532.2695137295. The cubic root of 42670545 is about 349.4427731870.

The spelling of 42670545 in words is "forty-two million, six hundred seventy thousand, five hundred forty-five".