70121744 has 120 divisors (see below), whose sum is σ = 177095808. Its totient is φ = 26584320.

The previous prime is 70121741. The next prime is 70121749. The reversal of 70121744 is 44712107.

It is not an unprimeable number, because it can be changed into a prime (70121741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405242 + ... + 405414.

Almost surely, 2^70121744 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 70121744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88547904).

70121744 is an abundant number, since it is smaller than the sum of its proper divisors (106974064).

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

70121744 is a wasteful number, since it uses less digits than its factorization.

70121744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 70121744 is about 8373.8727002505. The cubic root of 70121744 is about 412.3673162484.

The spelling of 70121744 in words is "seventy million, one hundred twenty-one thousand, seven hundred forty-four".