70420134400 has 720 divisors, whose sum is σ = 226461264480. Its totient is φ = 21452390400.

The previous prime is 70420134377. The next prime is 70420134419. The reversal of 70420134400 is 443102407.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 407052714 + ... + 407052886.

It is an arithmetic number, because the mean of its divisors is an integer number (314529534).

Almost surely, 2^70420134400 is an apocalyptic number.

70420134400 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70420134400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113230632240).

70420134400 is an abundant number, since it is smaller than the sum of its proper divisors (156041130080).

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

70420134400 is a wasteful number, since it uses less digits than its factorization.

70420134400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

Adding to 70420134400 its reverse (443102407), we get a palindrome (70863236807).

The spelling of 70420134400 in words is "seventy billion, four hundred twenty million, one hundred thirty-four thousand, four hundred".