42101240 has 16 divisors (see below), whose sum is σ = 94727880. Its totient is φ = 16840480.

The previous prime is 42101209. The next prime is 42101249. The reversal of 42101240 is 4210124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42101249) 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, 526226 + ... + 526305.

Almost surely, 2^42101240 is an apocalyptic number.

42101240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42101240 is an abundant number, since it is smaller than the sum of its proper divisors (52626640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42101240 is a wasteful number, since it uses less digits than its factorization.

42101240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052542 (or 1052538 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 42101240 is about 6488.5468326891. The cubic root of 42101240 is about 347.8817363587.

Adding to 42101240 its reverse (4210124), we get a palindrome (46311364).

The spelling of 42101240 in words is "forty-two million, one hundred one thousand, two hundred forty".