42150077 has 4 divisors (see below), whose sum is σ = 42180540. Its totient is φ = 42119616.

The previous prime is 42150047. The next prime is 42150149. The reversal of 42150077 is 77005124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25290841 + 16859236 = 5029^2 + 4106^2 .

It is a cyclic number.

It is not a de Polignac number, because 42150077 - 2¹⁶ = 42084541 is a prime.

It is a super-2 number, since 2×42150077² = 3553257982211858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42150047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13052 + ... + 15957.

It is an arithmetic number, because the mean of its divisors is an integer number (10545135).

Almost surely, 2^42150077 is an apocalyptic number.

It is an amenable number.

42150077 is a deficient number, since it is larger than the sum of its proper divisors (30463).

42150077 is a wasteful number, since it uses less digits than its factorization.

42150077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30462.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 42150077 is about 6492.3090653480. The cubic root of 42150077 is about 348.0161974449.

The spelling of 42150077 in words is "forty-two million, one hundred fifty thousand, seventy-seven".