42277545 has 40 divisors (see below), whose sum is σ = 76433280. Its totient is φ = 22356000.

The previous prime is 42277541. The next prime is 42277549. The reversal of 42277545 is 54577224.

It is a happy number.

42277545 is a `hidden beast` number, since 42 + 2 + 77 + 545 = 666.

It is an interprime number because it is at equal distance from previous prime (42277541) and next prime (42277549).

It is not a de Polignac number, because 42277545 - 2² = 42277541 is a prime.

It is a super-2 number, since 2×42277545² = 3574781622454050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42277541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55920 + ... + 56670.

It is an arithmetic number, because the mean of its divisors is an integer number (1910832).

Almost surely, 2^42277545 is an apocalyptic number.

42277545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42277545 is a deficient number, since it is larger than the sum of its proper divisors (34155735).

42277545 is a wasteful number, since it uses less digits than its factorization.

42277545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 898 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 42277545 is about 6502.1185009195. The cubic root of 42277545 is about 348.3666616971.

The spelling of 42277545 in words is "forty-two million, two hundred seventy-seven thousand, five hundred forty-five".