742006140 has 96 divisors (see below), whose sum is σ = 2259399744. Its totient is φ = 181186560.

The previous prime is 742006121. The next prime is 742006147. The reversal of 742006140 is 41600247.

It is a super-2 number, since 2×742006140² = 1101146223595399200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 742006140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742006147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27910 + ... + 47570.

It is an arithmetic number, because the mean of its divisors is an integer number (23535414).

Almost surely, 2^742006140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742006140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129699872).

742006140 is an abundant number, since it is smaller than the sum of its proper divisors (1517393604).

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

742006140 is a wasteful number, since it uses less digits than its factorization.

742006140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19727 (or 19725 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 742006140 is about 27239.7896467649. The cubic root of 742006140 is about 905.3208023992.

Adding to 742006140 its reverse (41600247), we get a palindrome (783606387).

The spelling of 742006140 in words is "seven hundred forty-two million, six thousand, one hundred forty".