42015454 has 16 divisors (see below), whose sum is σ = 68081328. Its totient is φ = 19331712.

The previous prime is 42015443. The next prime is 42015469. The reversal of 42015454 is 45451024.

It is a happy number.

It is a super-2 number, since 2×42015454² = 3530596749652232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6694 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (4255083).

Almost surely, 2^42015454 is an apocalyptic number.

42015454 is a deficient number, since it is larger than the sum of its proper divisors (26065874).

42015454 is a wasteful number, since it uses less digits than its factorization.

42015454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 42015454 is about 6481.9328907356. The cubic root of 42015454 is about 347.6452930033.

Adding to 42015454 its reverse (45451024), we get a palindrome (87466478).

The spelling of 42015454 in words is "forty-two million, fifteen thousand, four hundred fifty-four".