38142955 has 4 divisors (see below), whose sum is σ = 45771552. Its totient is φ = 30514360.

The previous prime is 38142941. The next prime is 38142961. The reversal of 38142955 is 55924183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55924183 = 7 ⋅7989169.

It is not a de Polignac number, because 38142955 - 2²¹ = 36045803 is a prime.

It is a super-2 number, since 2×38142955² = 2909770032264050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3814291 + ... + 3814300.

It is an arithmetic number, because the mean of its divisors is an integer number (11442888).

Almost surely, 2^38142955 is an apocalyptic number.

38142955 is a deficient number, since it is larger than the sum of its proper divisors (7628597).

38142955 is an equidigital number, since it uses as much as digits as its factorization.

38142955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7628596.

The product of its digits is 43200, while the sum is 37.

The square root of 38142955 is about 6175.9982998702. The cubic root of 38142955 is about 336.6186018803.

The spelling of 38142955 in words is "thirty-eight million, one hundred forty-two thousand, nine hundred fifty-five".