42340251540 has 24 divisors (see below), whose sum is σ = 118552704480. Its totient is φ = 11290733728.

The previous prime is 42340251467. The next prime is 42340251571. The reversal of 42340251540 is 4515204324.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 42340251498 and 42340251507.

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, 352835370 + ... + 352835489.

It is an arithmetic number, because the mean of its divisors is an integer number (4939696020).

Almost surely, 2^42340251540 is an apocalyptic number.

It is an amenable number.

42340251540 is an abundant number, since it is smaller than the sum of its proper divisors (76212452940).

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

42340251540 is a wasteful number, since it uses less digits than its factorization.

42340251540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705670871 (or 705670869 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 42340251540 its reverse (4515204324), we get a palindrome (46855455864).

The spelling of 42340251540 in words is "forty-two billion, three hundred forty million, two hundred fifty-one thousand, five hundred forty".