42151438 has 16 divisors (see below), whose sum is σ = 73941120. Its totient is φ = 17644536.

The previous prime is 42151423. The next prime is 42151453. The reversal of 42151438 is 83415124.

It is an interprime number because it is at equal distance from previous prime (42151423) and next prime (42151453).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34408 + ... + 35611.

It is an arithmetic number, because the mean of its divisors is an integer number (4621320).

Almost surely, 2^42151438 is an apocalyptic number.

42151438 is a deficient number, since it is larger than the sum of its proper divisors (31789682).

42151438 is a wasteful number, since it uses less digits than its factorization.

42151438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70071.

The product of its digits is 3840, while the sum is 28.

The square root of 42151438 is about 6492.4138808305. The cubic root of 42151438 is about 348.0199431474.

The spelling of 42151438 in words is "forty-two million, one hundred fifty-one thousand, four hundred thirty-eight".