8742545 has 32 divisors (see below), whose sum is σ = 12680448. Its totient is φ = 5660928.

The previous prime is 8742541. The next prime is 8742551. The reversal of 8742545 is 5452478.

It is not a de Polignac number, because 8742545 - 2² = 8742541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8742541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55607 + ... + 55763.

It is an arithmetic number, because the mean of its divisors is an integer number (396264).

Almost surely, 2^8742545 is an apocalyptic number.

It is an amenable number.

8742545 is a deficient number, since it is larger than the sum of its proper divisors (3937903).

8742545 is a wasteful number, since it uses less digits than its factorization.

8742545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249.

The product of its digits is 44800, while the sum is 35.

The square root of 8742545 is about 2956.7794980350. The cubic root of 8742545 is about 206.0057261110.

The spelling of 8742545 in words is "eight million, seven hundred forty-two thousand, five hundred forty-five".